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Sometimes I travel so much at the speed of light, I tend to forget that light is also one of the most important parts of a cannabis plant’s life. Not only does light regulate photosynthesis, but it also dictates when it’s time for your plant to flower those precious buds that make it all so worthwhile. Home growers may be familiar with the vegetative and flowering phases of cannabis cultivation and growth; however, the 12 hours of light, 12 hours of darkness schedule goes a little bit deeper. 

Why Is the 12/12 Light Cycle So Important?

This 12/12 light phase of the weed plant’s life follows the vegetative cycle, which has it primed for the eventual weight and density of flower buds. Photoperiod seeds and plants need a period of darkness to promote specific hormones and compounds that are critical to producing buds. 

For outdoor growers, the shift in daylight from summer to autumn naturally provides a full period of darkness each night. Indoor growers must mimic the internal signals of a photoperiod plant during dwindling daylight to a 12/12 split. During the vegetative cycle, the recommended amount of light is 18 hours, with 6 hours of darkness. To flower, your weed plant needs a hormonal signal to initiate the flowering process, and simply allowing for 12 hours of light will achieve that!

What About the 12/12 Light Cycle for Autoflowers?

Autoflower seeds and plants don’t rely on the same light cycle to trigger the signal to flower internally as their photoperiod counterparts. This quicker-to-harvest cannabis seed type instead relies on age to shift directly from vegetative to flowering phases. [1] 

Autos flower after only about 2-4 weeks on average due to their unique cannabis ruderalis genetics. This trait has evolved in nature to cause flowers to bloom automatically after a few weeks, despite drastic shifts in the amount of daylight available in the wild. Indoor breeders have continued to breed this trait into their autoflower cultivars.

Growers of autos instead typically utilize 18 hours of light/6 hours of darkness or 20 hours of light/4 hours of darkness to maximize photosynthetic processes and grow bigger plants. It’s not unheard of to run continuous light 24 hours a day for autos, but rest, recovery, and hormonal balance from a few hours of darkness are important as well. It can also help your electric bill!

What Exactly Happens During the 12 Hours of Light?

The main thing during flowering is photosynthesis. The ability of the weed plant to convert light energy into internal energy is critical for the continued growth of the flower buds during this time.

Proper light also ensures the plant can synthesize complex compounds and nutrients to continue developing. There are a few important things that take place right under the glow of the late summer/early fall sunshine or those bright grow lights in your tent or indoor grow room.

Bud Development

Among the main stem and secondary branches, preflowers begin to form. Growths known as meristems reproduce on the stems and branches. These growths form into individual preflowers. Each female reproductive part, known as the stigma, starts as a tiny white filament, eventually turning a reddish-brown during maturation. The flower buds develop along the stems and branches, becoming swollen with density and eventually cannabinoid-rich trichomes during the entire flowering cycle. [2]

Cannabinoid & Terpene Enhancement

Important cannabinoids and terpenes are produced and developed by the weed plant according to the strain. This is when primary cannabinoids like THC and CBD begin to fill the trichomes with their sticky resins, while other minor cannabinoids and less-present terpenes also begin to form. Cannabinoids cause the psychoactive and potentially medicinal effects of weed. Terpenes also contribute to the overall impact of certain strains while enhancing their flavor and aroma as well. [2]

Light Distance, Quality, and Intensity During the 12/12 Flowering Phase

Like the vegetative cycle of your weed plants, the flowering cycle needs to ensure that light quality and intensity are also maintained. 

Light Distance 

Your plants will continue to blossom with buds and get bigger as a result, as will the canopy too. While LED grow lights emit less heat than HPS lights, it’s still important that no matter what kind of lights you use when growing indoors, you maintain a healthy distance from the plant’s canopy. According to the folks at AC Infinity, your primary grow light should be hung at approximately 1.5” away from the canopy during flowering to avoid stress and light burn.

Light Intensity

One of the most important ways to optimize bud growth during the flowering phase is to provide specific light intensities. Photon Flux Density (PPFD) determines the amount of usable light and active photons (in the PAR range) that reach the plant’s surface each second. However, as no surprise, too much light intensity can adversely affect and stress your plants. Growers should try to keep their light intensity levels in the following ranges, with gradual adjustments, according to researchers:

  • Early flowering (weeks 1–3): Around 600–800 µmol/m²/s
  • Mid to late flowering (week 4–harvest time): Around 800–1000 µmol/m²/s; however, some studies have shown increased cannabinoids and yields up to 1300 µmol/m²/s [3][4]
  • Adjust the light distance to keep light intensity levels in range. [3]

Light Spectrum

Sunlight contains a full spectrum of different wavelengths that naturally affect how a weed plant grows, manufactures terpenes and cannabinoids, and yields. Some of these wavelengths are great for vegetation processes early on during the outdoor grow season, while others help promote flower production. 

  • LED grow lights can switch and adjusting wavelengths to zero in on the plant’s immediate needs. 
  • Going from red (625-700 nm) to far-red (700 nm) boosts flower production and cannabinoid concentrations. [5]
  • Full-spectrum white light with double red peaks can not only boost plant mass and flower production, but it also helps with photosynthesis. [6]

What Exactly Happens During the 12 Hours of Darkness?

When the days get shorter and extended periods of darkness (12 hours) begin in the late summer, it’s time for your outdoor plants to begin naturally flowering. If there isn’t sufficient darkness, your weed plants aren’t getting the right signal and are going to stay in a vegetative state, incapable of flowering.

The preflower starts to develop along branches and stems, forming the beginnings of your buds. Hormones called gibberellins and cytokinins kick off the flowering process, and the introduction of 12 hours of darkness is what sparks it. Trichome, terpene, and bud development also begin to take shape due to the right amount of darkness and stored energy from the 12-hour photoperiod that gets synthesized.

Keep It Dark for 12 Hours or Run the Risk of Confusing Your Weed Plant

The dark period of 12 hours is also a time for your plant to recover from the light with increased respiration and growth. Don’t confuse your weed plant by interrupting the 12-hour cycle of darkness–even for a moment! This will not only confuse your plant into thinking it’s in veg again, but it’ll also delay and affect flowering and bud growth, while the stress of it can lead to undesirable hermaphrodite weed plants. Keep to a strict 12-hour darkness period, no matter what!

Best Practices for the 12/12 Light Cycle of Your Cannabis Plants

Keep to a few best practices for indoor growers when switching your cannabis plants to flower, once they are big and strong enough in veg. These simple practices can make the difference between a successful harvest and a major bummer.

  • Use a digital or automatic timer to automatically control the daily light schedule for your plants, and keep it set. This will keep everything automated to prevent humanoid error. Any changes will produce stress that will affect flowering and overall health.
  • Be aware of light leaks in your tent or grow room when it is dark. Use blackout tape, curtains, or whatever dark surfaces you can to block out any light that can affect flowering.
  • Select grow lights that can adjust for different wavelengths during both veg and flower cycles.
  • Running your lights during the evening and early morning hours will help balance electricity and keep things cooler.
  • Look for the tell-tale white pistils of the preflower a few days to a week after flipping your lights to 12/12. 

Light and Dark: The Yin and Yang of the 12/12 Light Cycle

The photoperiod of light and dark, as well as nighttime, regulates the light schedule required for outdoor plants. However, for indoor growers, the choice must be made once the plants are as ready as they can be in vegetation. 

Flipping your indoor lighting schedule to 12/12 is a simple task that ultimately encourages both light and dark to start the party with dense and dank flower buds. Flipping to a 12/12 flower cycle is a simple task that ultimately paves the way to bring them to the table. 

Conclusion: Timing the 12/12 Light Cycle for Maximum Flower Power

Mastering the 12/12 light schedule is one of the most critical techniques in cannabis cultivation, especially for those growing photoperiod cannabis strains. Whether you’re working with indoor grow lights or relying on natural sunlight outdoors, providing your plants with exactly 12 hours of uninterrupted light and darkness will trigger the hormonal changes needed to produce dense, trichome-rich buds.

From strain selection to lighting intensity, distance, and spectrum, every factor plays a role in shaping the quality of your final harvest. If you’re aiming for high THC levels, strong terpene profiles, or simply the healthiest plants possible, understanding and controlling the 12/12 cycle is non-negotiable. And if you’re growing autoflower seeds, knowing the difference in light response will help you get the most from their rapid life cycle.

Need Help Choosing the Right Cannabis Seeds? Contact Multiverse Beans

Whether you’re dialing in your 12/12 light cycle or deciding between autoflower, photoperiod, or high-CBD cannabis seeds, our expert team at Multiverse Beans is here to help. We offer a carefully curated collection of premium cannabis seeds online, including rare genetics, fast-flowering strains, and high-yield varieties trusted by growers across the galaxy. If you have questions about lighting schedules, nutrients, or choosing the best strain for your setup, don’t hesitate to reach out. Contact us anytime to chat with one of our grow specialists and find the perfect seeds to match your cultivation goals. Your next harvest starts with the right beans and the right light.

References

  1. Gloss, D. (2015). An overview of products and bias in research. Neurotherapeutics: The Journal of the American Society for Experimental NeuroTherapeutics, 12(4), 731–734. https://doi.org/10.1007/s13311-015-0370
  2. Steel, L., Welling, M., Ristevski, N., Johnson, K., & Gendall, A. (2023). Comparative genomics of flowering behavior in Cannabis sativa. Frontiers in Plant Science, 14. https://doi.org/10.3389/fpls.2023.1227898
  3. Sae-Tang, W., Heuvelink, E., Nicole, C. C. S., Kaiser, E., Sneeuw, K., Holweg, M. M. S. F., Carvalho, S., Kappers, I. F., & Marcelis, L. F. M. (2024). High light intensity improves the yield of specialized metabolites in medicinal cannabis (Cannabis sativa L.), resulting from both higher inflorescence mass and concentrations of metabolites. Journal of Applied Research on Medicinal and Aromatic Plants, 43, 100583. https://doi.org/10.1016/j.jarmap.2024.100583
  4. Konvalina, P., Neumann, J., Hoang, T. N., Bernas, J., Trojan, V., Kuchař, M., Lošák, T., & Varga, L. (2024). Effect of light intensity and two different nutrient solutions on the yield of flowers and cannabinoids in Cannabis sativa L. grown in a controlled environment. Agronomy, 14(12), 2960. https://doi.org/10.3390/agronomy14122960
  5. Park, S. H., Pauli, C. S., Gostin, E. L., et al. (2022). Effects of short-term environmental stresses on the onset of cannabinoid production in young immature flowers of industrial hemp (Cannabis sativa L.). Journal of Cannabis Research, 4(1), 1. https://doi.org/10.1186/s42238-021-00111
  6. Holweg, M. M. S. F., Kaiser, E., Kappers, I. F., Heuvelink, E., & Marcelis, L. F. M. (2024). The role of red and white light in optimizing growth and accumulation of plant specialized metabolites at two light intensities in medical cannabis (Cannabis sativa L.). Frontiers in Plant Science, 15, 1393803. https://doi.org/10.3389/fpls.2024.1393803

Greg the Alien is here and at it again!  Sunlight and grow lights provide vital light for your cannabis plants to grow from seedling to harvest. These light sources can also add a lot of heat and humidity to any outdoor or indoor grow. Controlling and managing temperature and humidity effectively will ultimately impact the quality and quantity of your final harvest

Humanoid scientific studies have done their best to confirm the ideal range for both, but there is no clear consensus due to several different variables [1]. However, finding a comfort zone for optimal conditions can still be manageable with the right environment and equipment. Whether you’re growing feminized cannabis seeds, autoflower seeds, or high-THC strains, managing your environment is one of the biggest factors in maximizing yield and potency.

What Impacts Do Temperature & Humidity Have on Cannabis Plants?

Cannabis plant development depends on optimal temperature and humidity to process numerous internal functions vital for success. Learning how to manipulate both factors makes the difference between a high-quality, bountiful harvest and a cannabis plant full of bud rot and underdeveloped flower buds. Temperature and humidity control issues in either extreme range are important to control; however, so are air circulation and ventilation. This is especially true when growing premium cannabis genetics in controlled indoor settings.

Too High & Too Low Temperatures Do a Lot of Damage

Temperatures that are higher than the average range affect plant development by creating weaker buds in both potency and overall appeal. When I get too close to the sun in my spaceship, it can make me sweat and feel stressed—your weed plants aren’t any different!

High temperatures can create heat stress, which affects plant, terpene, and cannabinoid development and potency, while also causing nutrient burn and root rot. Low temperatures also slow down plant growth and create an environment for harmful mold, mildew, and bud rot. Growers working with rare cannabis strains or CBD-rich cultivars may find these temperature swings especially damaging.

Excessively High & Low Humidity Also Affects Cannabis Plants

Transpiration is essentially the process by which your cannabis plant sweats during development. It’s an essential process for photosynthesis and for moving nutrients and water from the roots to the rest of the plant while cooling it down. However, a major side effect is that a good amount of water vapor gets put back into the air as a result, causing increased humidity in a grow room or tent. [2]

Cannabis plants with excessive humidity have insufficient transpiration, which can lead to root issues, mold, mildew, and other plant diseases. Low humidity is often responsible for nutrient burn due to excessive water evaporation from leaves. This is why indoor growers who source their seeds from a reputable cannabis seed bank should also invest in quality ventilation systems to protect their genetics.

Improving Outdoor Air Circulation & Ventilation

Growing cannabis outdoors can be an advantage due to the natural breeze and open space that allow for optimal air circulation and ventilation, which are essential for plant development. However, some geographical regions can be too stagnant and just plain hot. Try some of the techniques below to achieve optimal results.

Proper Spacing 

Space your plants away from each other properly, so as not to overcrowd the grow area with too many transpiring plants not getting enough individual airflow. Be aware of the specifications of the specific strains you’re growing to space them correctly for all growth phases. This becomes especially important when cultivating large crops from bulk cannabis seeds.

Direct or create more optimal airflow naturally where open breezes occur, and there’s nothing in the way to block them. Create enough of a gap between all plants to avoid any issues.

Use Fans Outdoors

Circulation fans aren’t just an indoor grow tool; they can also be used outdoors. Install oscillating fans to create a gentle breeze that keeps your plant foliage dry, thereby reducing the risk of mold and mildew issues. This can help ensure the success of outdoor cannabis seeds, especially in humid regions.

Growing in A Greenhouse

Use a greenhouse to maintain temperature, humidity, and proper ventilation, free of the often-overwhelming elements of the great outdoors. Keep doors and windows open for a steady exchange of fresh air. 

Prune and Maintain

Proper air flow and ventilation can often be thwarted simply by the very plant you are growing. When a plant has too thick and dense foliage, it’s necessary to prune and remove the excess. This will improve how air can circulate and be ventilated around your plants and grow area, while also helping to reduce moisture and humidity. 

Improving Indoor Air Circulation & Ventilation

When growing indoors, avoiding mold, mildew, and a host of other detrimental plant diseases can be greatly achieved by maintaining proper air circulation and ventilation. This often requires additional equipment and costs on top of what you already have running in your grow setup. Indoor growers working with fast-flowering cannabis seeds or high-yield strains may find these investments essential for success.

Exhaust, Intake, and Oscillating Fans

As a crucial piece of indoor grow equipment, fans remove stagnant humid air while introducing fresh air and improved circulation. All of these fans, in conjunction with some ventilation ducts, will make a dramatic difference in maintaining proper temperature and humidity levels indoors.

  • Exhaust fans work in coordination with ventilation systems to remove stale air from the tent or grow room, which leads to increased levels and mold and mildew. Hot air rises, so placing exhaust fans at the top of wherever you grow is recommended. 
  • Intake fans should be placed opposite exhaust fans so they can provide fresh, new air to the indoor environment via intake valves and ports.
  • Oscillating fans efficiently circulate and distribute oxygen, CO2, temperature, and humidity. This type of equipment also creates better airflow throughout the entire plant structure and canopy. 

What Are The Proper Temperature & Humidity Levels for Cannabis Plants?

Cannabis plants rely on different temperature and humidity ranges according to several different factors. Understanding how these affect your plant’s specific needs will greatly impact your success as a grower. Indoor and outdoor grows also have different variables to control—some are listed below; however, keeping everything within range is doable for both.

  • Geographical region: Areas with extreme temperatures and humidity will tend to create excessive condensation for outdoor grows, leading to mold and stress unless the grower can mitigate with techniques like tarping and using a greenhouse. [3]
  • Strain: Sativa and sativa-dominant strains are often able to handle high heat because they originate from warmer, equatorial climates. Indica strains don’t always manage excessive heat as well. Regardless of type, certain strains can adapt better than others, so be aware of the limitations and potential of each cannabis seed and strain you wish to grow. Autoflower strains are often hardier and can handle a little bit more stress from too high or too low temperatures due to their Cannabis ruderalis lineage.
  • Development stage: As your cannabis plant develops, it has different needs in each phase. Seedling, vegetative, early flowering, and late flowering cycles are most successful when growers home in on the right temperature and humidity ranges for both. These variations are often able to be controlled most by indoor growers specifically.  

Outdoor Cannabis Plant Temperature & Humidity Levels

Okay, so you’ve probably been thinking to yourself, when is this little green SOB gonna finally say what the ideal temperature and humidity levels should be? For outdoor growers, much of the outcome is directly related to the geographical climate. 

If you’re growing outdoors in a humid region like most of the East Coast, you’re going to have to make RH adjustments. The same thing goes for the PNW–be prepared for levels that can contribute heavily to mold and mildew. Desert environments are arid and dry and can use the aid of a greenhouse to help manage conditions and pests like spider mites

  • Outdoor Temperature – Seedling-to-Harvest
    • No Greenhouse: 77–86°F (higher range for seedlings)
    • In Greenhouse: 68-70°F 
  • Outdoor Humidity (Greenhouse & No Greenhouse)
    • Seedling: 75% RH
    • Vegetative: 55-60% RH
    • Flowering: 55-60% RH [4][5]

Mitigate the elements of the outdoors with a greenhouse or plant covers. You can also use an overhead tarp to keep moisture under control from morning dew, excessive heat, and torrential downpours when necessary. 

Indoor Cannabis Plant Temperature & Humidity Levels

Researchers still have a lot of work to do when it comes to cannabis cultivation-based studies. Currently, there are only a few humanoid peer-reviewed studies that confirm the ideal indoor growing temperatures by stage. On the other hand, every single humanoid weed grower, big or small, has their specific ranges and preferences for their grows that they think are ideal. 

To straddle the line of science and experience, I have included ranges according to researchers and ranges according to cultivation and light systems pros. I think it’s important to understand what growers versed in just how much grow lights add heat and stress to the environment think the adjusted ranges should be as well.  

Understanding Vapor Pressure Deficit (VPD)

Vapor Pressure Deficit (VPD) is a factor that measures the rate at which plants transpire and how much moisture the air can still hold. By calculating the VPD, growers can ensure their plants are not only getting ideal temperature and humidity levels but also optimal results with the following:

  • Water retention
  • Water uptake
  • Nutrient metabolism
  • Development rate
  • Mold and mildew resistance
  • Photosynthesis

VPD is calculated by measuring air temperature, leaf temperature, and relative humidity levels in an indoor environment. Overly humid air that contains a lot of water equals low VPD, while dry air that can hold even more moisture equates with high VPD. 

Adding more humidity to a grow space will lower VPD, while lowering it raises VPD. Increasing temperature raises VPD, while lowering it lowers the VPD level. Circulation and ventilation equipment like that described for outdoor growing is also crucial to indoor growers navigating extremes in both ranges. [6]

Indoor Humidity and Temperature Ranges According to Researchers

Several cannabis researchers have reported a few slightly different windows of efficiency for temperature and humidity levels when growing cannabis plants. It’s up to you to be the judge of which ranges work for you and the specific strains and region you are growing in. 

Some of these ranges are not as specific (day levels vs night levels), but according to researchers, growers should keep temperature and humidity levels in the following ranges for optimal VPD. 

Seedling

  • Temperature: 70-83°F
  • Humidity: 75% RH 

Vegetative Stage

  • Temperature: 77-86°F 
  • Humidity: 55-60% RH

Flowering

  • Temperature: 77-86°F (sativas rely on the higher end of the range)
  • Humidity: 55-60% RH

Indoor Humidity and Temperature Ranges According to Industry Experts

According to Spider Farmer, an indoor cultivation household name, home growers should try to zero in on the following ranges and humidity for each development phase.

Seedling

  • Daytime Temperature: 70-85°F 
  • Nighttime Temperature: 65-80°F 
  • Humidity: 75-85% RH (higher RH helps with vital moisture retention)

Vegetative Stage

  • Daytime Temperature: 70-85°F 
  • Nighttime Temperature: 60-75°F 
  • Humidity: 45-55% RH (decreased RH helps with preventing mold & mildew)

Early Flowering Stage

  • Daytime Temperature: 65-84°F 
  • Nighttime Temperature: 60-75°F 
  • Humidity: 35-45% RH 

Late Flowering Stage

  • Daytime Temperature: 64-75°F
  • Night Temperature: 60-68°F
  • Humidity: 30-40% RH [3][4][6]

Lower Nighttime Temperatures Help Flower Development & Quality

Dropping the temperature a few degrees at night provides a signal to your plants that the cooler overnight temperatures of autumn are on the way. This signal naturally occurs with outdoor grows, and helps indoor grows with flower, trichome, terpenes, color, and cannabinoid development. Lower nighttime temperatures also give your plants a rest while facilitating the metabolization of carbohydrates crucial to plant health. [7]

Use the Right Equipment for Optimal Temperature & Humidity Environments

On top of implementing quality air circulation and ventilation equipment already discussed for outdoor use, such as fans and exhaust systems, there are a few other ways to stay on top of your indoor levels.

Hygrometers and digital humidity controllers are crucial for monitoring and adjusting humidity levels. Humidity controllers can automatically adjust your indoor grow space in conjunction with a humidifier/dehumidifier. Adjusting watering practices to avoid overwatering and excess moisture keeps humidity levels lower, while running your grow lights at night can help reduce extra heat in the grow area as well. Like outdoor plants, proper spacing and upkeep of pruning on your indoor plants will help with air circulation and lower humidity immensely.

Contact Multiverse

Paying attention to your levels and ensuring your environment has what it needs to maintain balance and be successful is paramount in navigating the spectrum of potential that temperature and humidity bring to every grow. Understanding and applying many of these concepts to newer growers can be tricky, so always feel free to reach out to Uncle Paulie and the grow experts at Multiverse Beans with any of your indoor/outdoor temperature and humidity control questions!

References

  1. Holweg, M. M. S. F., Curren, T., Cravino, A., Kaiser, E., Kappers, I. F., Heuvelink, E., & Marcelis, L. F. M. (2025). High air temperature reduces plant specialized metabolite yield in medical cannabis, and has genotype-specific effects on inflorescence dry matter production. Environmental and Experimental Botany, 230, 106085. https://doi.org/10.1016/j.envexpbot.2025.106085
  2. Medina, S., Vicente, R., Nieto-Taladriz, M. T., Aparicio, N., Chairi, F., Vergara-Diaz, O., & Araus, J. L. (2019). The plant-transpiration response to vapor pressure deficit (VPD) in durum wheat is associated with differential yield performance and specific expression of genes involved in primary metabolism and water transport. Frontiers in Plant Science, 9, 1994. https://doi.org/10.3389/fpls.2018.01994
  3. Vernon, M., Kouzani, A. Z., Webb, L. D., & Adams, S. D. (2023). A survey of modern greenhouse technologies and practices for commercial cannabis cultivation. IEEE Access, 11, 62077–62090. https://doi.org/10.1109/ACCESS.2023.3285242
  4. Chandra, S., Lata, H., Khan, I. A., & ElSohly, M. A. (2012). The role of biotechnology in Cannabis sativa propagation for the production of phytocannabinoids. In S. Chandra, H. Lata, & M. A. ElSohly (Eds.), Biotechnology for medicinal plants (pp. 123–148). Springer. https://doi.org/10.1007/978-3-642-29974-2_7
  5. Bilodeau, S. E., Wu, B.-S., Rufyikiri, A.-S., MacPherson, S., & Lefsrud, M. (2019). An update on plant photobiology and implications for cannabis production. Frontiers in Plant Science, 10, 296. https://doi.org/10.3389/fpls.2019.00296
  6. Jin, D., Jin, S., & Chen, J. (2019). Cannabis indoor growing conditions, management practices, and post-harvest treatment: A review. American Journal of Plant Sciences, 10(6), 925–946. https://doi.org/10.4236/ajps.2019.106067
  7. Bok, G., Hahm, S., Shin, J., & Park, J. (2023). Optimizing indoor hemp cultivation efficiency through differential day–night temperature treatment. Agronomy, 13(10), 2636. https://doi.org/10.3390/agronomy13102636

Figuring out how to keep your cannabis plants thriving is sometimes a tricky balancing act. Maintaining the proper conditions, water, and nutrients is a standard performance for anyone growing cannabis seeds and clones. Many types of nutrients can help offset deficiencies in your plants–knowing how and when to use them is vital. 

What Are Nutrient Deficiencies in Cannabis Plants?

Aliens, apples, aardvarks, and all living things need water and nutrients to survive–so do cannabis plants! When you provide your weed plants with nutrients, it helps them reach their true potential. 

Researchers report that improving soil health by increasing organic matter significantly impacts harvest yield [1]. However, nutrient deficiencies can often rear their ugly heads before you even notice. A telltale sign that something is up with your cannabis plant’s health is unhealthy-looking leaves. Discoloration, spotting, wrinkling, and other anomalies are your plant’s way of saying, “Hey, I could use some food over here, buddy!”.

What Causes Nutrient Deficiencies in Cannabis Plants?

If the pH levels of your soil mix or growing media aren’t within the proper range, chances are that you’re going to be dealing with nutrient deficiencies. Plants simply can’t absorb nutrients, or they also get locked out and become unavailable, if they’re even being added to the soil or water by the grower at all. Soil or hydro chambers can sometimes lean one way compared to the other–too acidic or too basic. 

A pH balance of 6.0 – 6.5 is essential for cannabis plants grown in soil to thrive, while 5.5 – 6.5 is recommended for hydroponic grows. These pH levels have been proven to provide the most optimal final yields. [2] 

Making Life Easier with Living Soil & Super Soil

Some grow media come complete with nutrient amendments that keep pH naturally regulated, while supplying the right nutrients to plant roots. The need to obsessively check pH and supply nutrients is eliminated with a properly calibrated super soil mix. Super soil is full of a balanced mix of organic matter right off the bat. It contains many nutrients that growers using a traditional potting soil mix or hydro grow would have to manually adjust regularly. 

Living soil contains organic microbes in addition to fungi and nutrients. Microbes decompose organic matter while maintaining optimal nutrient balance. An entire ecosystem can thrive in living soil for everyone’s benefit–microorganisms, fungi, plants, and humanoids. Researchers have also noted that maintaining a healthier microbial environment also dramatically improves the final yield [1]. That’s not to say growers using either super soil or living soil won’t ever have to adjust pH–it does happen–but living and super soil set growers up to generally not need to. These methods are ideal for organic cannabis seed cultivation or for anyone aiming to grow high-THC cannabis plants without synthetic inputs

What Types of Nutrients are Necessary for Cannabis Plants?

Before we get into how to counter nutrient deficiencies if you aren’t using living or super soil, let’s talk about the nutrients themselves. There are three different types of nutrients involved in keeping your cannabis plant happy and healthy, each one just as crucial as the other. Whether you’re growing medical marijuana strains or CBD-rich cannabis plants, all varieties depend on the same core nutrients to thrive

Primary Macronutrients

The letters N, P, and K are your best friends if you are a cannabis grower. Nitrogen (N), Phosphorus (P), and Potassium (K) are utilized in high demand for growth vigor and optimal development. The vegetative stage is especially in need of these macronutrients for those very reasons. In contrast, the flowering stage requires a cut-off of nitrogen to ensure all efforts go towards boosting flower growth first and foremost. [3]

Secondary Macronutrients

Secondary nutrients are necessary for many photosynthetic functions, as well as enzyme activation, cell growth, nutrient absorption, and overall vigor. These include Calcium (Ca), Magnesium (Mg), and Sulfur (S). Secondary and primary macronutrients form the core pillars of development above any others. [3]

Micronutrients

Cannabis plants don’t require specific micronutrients in such high demand as the other two types; however, these nutrients are critical for many growth functions. Micronutrients maintain vital processes like photosynthesis, metabolization of other nutrients, respiration, and optimal chlorophyll production. These compounds keep the engine that is your cannabis plant humming along behind the scenes. [4]

Balanced feeding is key whether you grow indoor cannabis strains, outdoor photoperiod plants, or start from cannabis seed bank genetics.

Take a look at a helpful table to guide and inform you more easily on each type of nutrient, the deficiencies they can fight, as well as their organic sources.  

Nutrient 

Nutrient Type

Deficiency Symptom It Counters

Organic Sources & Compounds

pH Influence & Balancing Notes

Nitrogen (N)

Macronutrient

Yellow leaves, slow growth

Blood meal, fish emulsion, composted manure, alfalfa meal

Can somewhat acidify soil, lime can help buffer pH

Phosphorus (P)

Macronutrient

Purple stems, stunted development, and root issues

Bat guano, bone meal, worm castings, rock phosphate

Too much lowers pH

Potassium (K)

Macronutrient

Curled leaves, burnt leaf tips, poor stem development

Wood ash, kelp meal, greensand, banana peels

Can slightly raise pH, specifically wood ash

Calcium (Ca)

Secondary

Poor stem development, curled leaves

Dolomite lime, gypsum, crushed eggshells

Raises pH, specifically dolomite lime

Magnesium (Mg)

Secondary

Interveinal chlorosis (yellow between veins), poor photosynthesis

Dolomite, lime, compost, epsom salt

Epsom salt is pH neutral

Sulfur (S)

Secondary

Yellow & stunted development

Epsom salt, gypsum, compost, sulfur

Sulfur lowers pH

Iron (Fe)

Micronutrient

Yellow leaves, inefficient chlorophyll production

Chelated iron, compost, fish emulsion

Lowers pH or may be neutral

Manganese (Mn)

Micronutrient

Yellow leaves, brown spotting

Manganese sulfate, compost, kelp meal

Slightly acidic

Zinc (Zn)

Micronutrient

Poor node development, wrinkled leaves

Zinc sulfate, compost, seaweed

 Slightly acidic, compost can buffer pH

Copper (Cu)

Micronutrient

Darkened leaves, poor flower bud growth

Copper sulfate, kelp meal,

compost

Slightly acidic

Boron (B)

Micronutrient

Brittle stems and leaves

Borax, kelp meal, compost

Excessive use lowers pH

Tips for Preventing Nutrient Deficiencies

  • If possible, use grow media like living soil and super soil. They are designed to maintain pH balance almost automatically without the need to incessantly check pH, acquire nutrients, and then supply them.
  • Always pay attention to leaf shape, color, and development patterns to stay ahead of any nutrient deficiencies before they get serious.
  • Keep a nutrient feeding chart. Online nutrient feeding chart calculators can help you design a schedule for your plant’s specific needs.
  • Use only high-quality nutrients. Only the best for your cannabis plants will result in the best results come harvest time.
  • Using compost in your soil helps to create a healthier ecosystem full of beneficial microbes.
  • Use chelated nutrients created for optimal absorption in plants to help prevent lockout.
  • Use distilled water when mixing and adding liquid nutrients.
  • Use a digital pH meter for the most precise measurements of your plant’s pH levels. Drops and strips still work, but digital pH meters are the most accurate.
  • Flush before harvest to remove nutrient concentration in the roots and let your cannabis plants absorb any that remain. The result is a better-tasting, higher-quality harvest.

These steps are especially helpful when growing premium cannabis genetics purchased from a trusted online seed bank.

Optimize Your Cannabis Plants with the Right Grow Media & Nutrients

The choice is up to you, my humanoid growmie, as to what media you want to grow weed in. Options like living and super soil are your best bet to avoid pH issues. Traditional soil potting mixes and hydroponic grows require regular monitoring to maintain a balanced environment for a successful harvest. But that’s not to say it’s impossible–millions of humanoids monitor pH and add the necessary nutrients to their weed plants daily. However, truly understanding which nutrients can do what, and when to adjust them, is the key!

Shop cannabis seeds for beginners or expert-level genetics to match your growing setup and feeding strategy. Contact us today.

References

  1. Wee, Y. B., Berkowitz, O., Whelan, J., & Jost, R. (2025). Same, yet different: Towards understanding nutrient use in hemp- and drug-type Cannabis. Journal of Experimental Botany, 76(1), 94–108. https://doi.org/10.1093/jxb/erae362
  2. Jin, D., Jin, S., & Chen, J. (2019). Cannabis indoor growing conditions, management practices, and post-harvest treatment: A review. American Journal of Plant Sciences, 10(6), 925–946. https://doi.org/10.4236/ajps.2019.106067
  3. Kpai, P. Y., Adaramola, O., Addo, P. W., MacPherson, S., & Lefsrud, M. (2024). Mineral nutrition for Cannabis sativa in the vegetative stage using response surface analysis. Frontiers in Plant Science, 15, Article 1501484. https://doi.org/10.3389/fpls.2024.1501484
  4. Malík, M., Praus, L., Kuklina, A., Velechovský, J., Janatová, A. K., Klouček, P., Mládek, V., & Tlustoš, P. (2025). Cannabis yield and cannabinoid profile affected by plant nutrition and planting density. Industrial Crops and Products, 223, 120293. https://doi.org/10.1016/j.indcrop.2024.120293




The question every new grower ponders before putting cannabis seeds into soil: How long does it take to grow cannabis? While there is no one definitive answer, we do know an average seed-to-harvest timeline that you can expect. However, with anything organic, there are always X factors that come into play that can delay or speed up the process. 

In this guide, take a ride with me, your buddy Greg, while I break down how long the most pivotal stages in cannabis seed cultivation take and what you can expect on your way to a bountiful harvest!

Important Factors that Affect How Long it Takes to Grow Cannabis

There’s no definitive answer on how long it takes to grow cannabis due to several different factors. However, fellow growers have determined the average at 3-5 months for indoor and 5-6 months for outdoor. That said, it’s important to keep in mind that not all cannabis seeds and grows are created equal.

  • Genetics: Obtaining cannabis seeds from a reliable breeder or seed bank like MVB helps ensure your seeds are healthy and viable enough for the long cultivation journey ahead. Growing with high-quality genetics bred with care and expertise helps cut out a lot of the guessing game in many life cycle stages of growing weed. If you’re wondering where to start, it’s crucial to buy cannabis seeds online from reputable sources to maximize your chances of a smooth grow.
  • Strain type: Indica, sativa, and hybrid cannabis seeds vary in how long they take to flower and finish. If you grow sativa cannabis seeds or a sativa-dominant hybrid, expect to wait longer to harvest them. You can read more info on these timelines in the Flower section below.
  • Indoor vs. outdoor: The indoor grow cycle can typically take 3-5 months in total, while outdoor tends to take the entire growing season of about 5-6 months, depending on region and climate, maybe even longer.
  • Hydroponic vs. soil: Cannabis seeds grown hydroponically have a faster growth cycle compared to outdoor and indoor weed plants. Hydro grows also have shorter flowering periods versus weed plants grown exclusively in soil.
  • Photoperiod vs. autoflower seeds: Autoflower cannabis seeds shift directly into the flower phase after only about 3–4 weeks of vegetative growth, which means a faster finishing and harvest time for them versus photoperiod cannabis seeds, which can take several months or longer to complete the vegetative life cycle.If you’re looking to speed things up, consider buying autoflower seeds online to shorten your grow from start to finish.
  • Growing conditions: The environment, temperature, humidity, soil, and pH balance are just some of the growing conditions that affect how long it takes to grow weed. Balance and maintain all of your weed plant’s needs, and your grow will finish up without a hitch–fail to do so, and expect longer grow times.
  • Maintenance – pruning, topping, low stress testing, and defoliation are crucial for maintaining plant health. Growers who fail to keep up with the maintenance needs of their weed plants ultimately face longer grow times or worse due to disease, stress, and imbalances.

Germination and Seedling Life Cycles

The combination of warm temperatures, air, and moisture creates the right environment for cannabis seed germination. Germination occurs once the taproot emerges from the seed shell as a result of the aforementioned conditions, taking anywhere from 1-7 days, depending on the right conditions and the viability and health of the seeds. [1]

Once the taproot emerges from the cannabis seed, it attaches itself to the soil, eventually culminating in the first set of leaves to appear. The developing cannabis seedling then makes great use of light and just a small amount of water during its life as a seedling. Higher humidity in the range of 60-75% RH is advised for seedlings and plants in the early stages of veg growth. 

Photoperiod plants typically start an 18/6 light cycle, while autoflowers run the same light cycle or higher (many growers use 24 hours of light). The seedling life cycle can take anywhere from 3 to 15 days before settling into the official vegetation phase. [2][3]

Vegetative Life Cycle 

The vegetative life cycle can last a while because it’s a lot of work building out the support system for the big buds your weed plants are going to start producing soon. While autoflower plants only take about 3-4 weeks in total to finish up their particular vegetative life cycle, photoperiod plants take longer due to their larger physiology. Depending on the strain, weed plants typically mature in 6-9 weeks. [2][3]

Photoperiod Vegetative Life Cycle by Weeks

  • Weeks 1–2: During the initial weeks of the vegetative stage, weed plants gain height, develop leaf shoots, and start expanding their root systems.

  • Weeks 3–4: Vegetative growth of leaves and stems is amped up during this part of the weed plant’s life cycle.

  • Weeks 5–6: On the march towards the flowering phase, plant structure is significantly increased. Branches and nodes are maturing to anticipate bud development.

  • Weeks 7–9: Plant structure gains peak growth just before switching to flower.

Flowering Life Cycle

Once the switch to a 12/12 light cycle happens—either indoors or naturally as a result of the declining sunlight later in summer—weed plants begin flowering with buds within 10–15 days. [2][3]

During this time, preflowers will begin to appear on nodes and branches. Weeks 3–5 of flowering will start to present small bud formations. One study examined 200 THC-rich indoor weed plants to figure out the average length it takes to finish flowering: the total being 57 days or about 8 weeks under a 12/12 light schedule. [4]. 

Indoor & Outdoor Averages

Regarding outdoor cannabis plants, early-flowering strains like indicas are ready around August–September, while sativas and others that take longer can finish up as late as October–November, depending on the region. [5]

Average Indica, Hybrid, Sativa, and Autoflower Flowering Duration

  • Indica flowering time: 6–8 weeks

  • Hybrid flowering time: 7–10 weeks

  • Sativa flowering time: 10–14 weeks

  • Autoflower flowering time: 4–8 weeks, depending on indica, sativa, or hybrid dominance

Knowing your strain’s typical timeline can help you plan your cannabis grow cycle more accurately—especially when deciding whether to buy autoflower seeds or stick with photoperiod strains.

Harvest Life Cycle

Determining when is the right time to chop your weed plants down is based on trichome color and can’t be pinpointed down to an exact window of time. Whereas other crops can be ripe for the picking based on fruit color and size, the trichome heads full of cannabinoids determine ripeness for cannabis. 

Trichomes are only viewed effectively at a microscopic level. Having a digital microscope determines the ripeness of cannabis buds the best. The general rule of thumb is to harvest with a majority of milky white trichomes with only a smattering of brown or amber colored trichomes in the mix. [6]

Drying & Curing Timelines 

Drying your harvested cannabis, however, is estimated to take a certain amount of time. This is the process of hanging the branches from the plant with those lovely cannabis buds attached to them to dry. Keeping the buds in a well-ventilated room around 65-70°F and 50- 55% RH is ideal. This process is called dry trimming, and it typically takes anywhere from 4 to 14 days on average. Wet Trimming is drying your harvest after you’ve already trimmed it, and can lessen the drying time to 4-5 days since there is less material to manicure. [7]

Once trimming is complete, it’s time to cure your freshly manicured buds to enhance the terpenes, aroma, taste, and quality.  Curing can take anywhere from 2 to 4 weeks or longer to enhance terpene and cannabinoid content. Different strains cure differently and can affect the amount of time it takes, while environmental conditions can also play a part in the curing timeline. [7]

Burping, or opening the jars each day for a few minutes, brings in fresh oxygen and removes remaining moisture. Repeat the twice-daily ritual of burping your jars for the first week or two, eventually phasing the process out until humidity levels around 55-65% remain. 

Where Does the Time Go?

Well, that was an exciting ride down the cannabis seed-to-harvest timeline to figure out how long it takes to grow weed! Now that you know what kind of time commitment to expect, you can also determine how long it takes on average to complete each life cycle phase for a weed plant.

As mentioned, there are a lot of outlying factors that will also affect these timelines, so please don’t treat them as gospel! Keep a journal of how long each phase took during this grow to determine a baseline for your next one to improve upon. The keys to a high-quality harvest are in your hands, but the team at Multiverse Beans is always ready to help should you have any questions during any stage of the life cycle!

Ready to Grow Cannabis?

Looking to get started or speed things up? Buy cannabis seeds online from Multiverse Beans—your trusted source for autoflower, indica, hybrid, and sativa strains. Whether you’re new or seasoned, we’ve got genetics for every grow timeline and harvest goal.

Explore our premium collection of cannabis seeds for sale online and learn how to grow cannabis of your own today.

References

  1. Sorokin, A., Yadav, N. S., Gaudet, D., & Kovalchuk, I. (2021). Development and standardization of rapid and efficient seed germination protocol for Cannabis sativa. Bio-protocol, 11(1), e3875. https://doi.org/10.21769/BioProtoc.3875
  2. Chandra, S., Lata, H., Khan, I. A., & Elsohly, M. A. (2008). Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO₂ conditions. Physiology and Molecular Biology of Plants, 14, 299–306. https://doi.org/10.1007/s12298-008-0027-x
  3. Chandra, S., Lata, H., Mehmedic, Z., Khan, I. A., & ElSohly, M. A. (2015). Light dependence of photosynthesis and water vapor exchange characteristics in different high Δ⁹-THC yielding varieties of Cannabis sativa L. Journal of Applied Research on Medicinal and Aromatic Plants, 2(2), 39–47. https://doi.org/10.1016/j.jarmap.2015.04.001
  4. Jin, D., Jin, S., & Chen, J. (2019). Cannabis indoor growing conditions, management practices, and post-harvest treatment: A review. American Journal of Plant Sciences, 10(6), 925–946. https://doi.org/10.4236/ajps.2019.106067
  5. Chandra, S., Lata, H., & ElSohly, M. A. (2020). Propagation of cannabis for clinical research: An approach towards a modern herbal medicinal products development. Frontiers in Plant Science, 11, 958. https://doi.org/10.3389/fpls.2020.00958
  6. Sutton, D. B., Punja, Z. K., & Hamarneh, G. (2023). Characterization of trichome phenotypes to assess maturation and flower development in Cannabis sativa L. (cannabis) by automatic trichome gland analysis. Smart Agricultural Technology, 3, 100111. https://doi.org/10.1016/j.atech.2022.100111
  7. Al Ubeed, H. M. S., Wills, R. B. H., & Chandrapala, J. (2022). Post-harvest operations to generate high-quality medicinal cannabis products: A systemic review. Molecules, 27(5), 1719. https://doi.org/10.3390/molecules27051719

A great perk of growing weed is all of the other things you can make with it and your trim, like edibles! Making edibles is an easy way to make great use of your entire harvest by creating a wealth of oil, butter, and treats for not only yourself but your friends and family, too! Let’s explore how you can make your own infused oil and butter to DIY your own edibles ASAP!

Why Should I Make My Cannabis Edibles Instead of Buying?

Making cannabis edibles like brownies, gummies, and other assorted treats from the leftover trim from your harvest is one of the most resourceful ways to repurpose all of the plant. The massive amount of trim leftover from the trimming process, along with kief, larf, and some popcorn buds, aren’t always the most palatable things to smoke. That’s why making it all into butter or oil to create your edibles makes the most sense. 

This is especially helpful if you’ve purchased cannabis seeds online and grown your own plants at home. Why let all that extra biomass go to waste?

There’s Enough Leftover Plant Material to Produce So Many Edibles

Chances are, if you were able to grow weed successfully, your harvest also yielded a lot of extra big buds that can also be thrown into the mix for edibles, too, if desired. One bountiful harvest can give a home grower enough leftover plant material to make DIY edibles with trim and buds that last for months—even up to a year!

Making Edibles is Super Cost-Efficient

Most states that have a medical and recreational program offer cannabis edibles on their menu. While prices vary state-to-state, the cost of a package of edibles can run anywhere from $10-$60 on average, depending on the dosage and product. For anyone who enjoys edibles, those costs can certainly add up. Save yourself a considerable amount of money by simply turning all of your leftover and extra plant material into edibles.

What Plant Material Should I Use?

You’ll want to limit the biomass you use for edibles to bud (any size), trim, sugar leaves, kief, and larf. Try to exclude utilizing a significant amount of stems as they don’t add much cannabinoid content to the mix and can get in the way. Fan leaves also contain a limited amount of cannabinoids and can take up a lot of space, so excluding them is also a good practice when creating homemade edibles from cannabis trim.

How to Make Different Types of Edibles

Edibles have come a long way since brownies were the main delivery system for edibles popularized by the Alice B. Toklas cookbook. Nowadays, any type of baked goods can be made with cannabutter–butter infused with activated cannabinoids. Meanwhile, cannabis gummies have become the norm and standard bearer as one of the most popular ways to ingest cannabis these days. A wide variety of each type of treat awaits; however, before you get that far, you must first activate, or decarboxylate, the cannabis. 

Decarboxylation of Cannabis

Cannabinoids like THC and CBD exist in their acidic forms before they are consumed. These cannabinoids are activated by heat–smoking, vaping, or by what’s known as decarboxylation [1]. If you don’t decarboxylate–essentially roast your plant matter at a low, even temperature–it won’t activate, and you won’t feel a thing other than a tummy ache from all of the chlorophyll! 

How to Decarboxylate

The MVB Guide to Decarboxylation is the definitive source on everything you need to know when activating your THC and/or CBD before making edibles. Once you’ve settled on your device or cookware to decarb your weed, maintain the following scientifically studied times and temperatures to maximize the process and activate as many cannabinoids as possible [2]. Once decarbed, the next step is to infuse your weed with oil or butter to create edibles. 

Should I Use Oil or Butter to Make My Edibles?

Cannabutter–butter infused with activated cannabis–is typically used to make edibles like cookies, brownies, cakes, and other baked goods. It can be used in any recipe that calls for actual butter. Cannabutter needs to be refrigerated or frozen to stay fresh and be preserved properly if not being used in a recipe right away. Clarifying your butter before infusing it removes the milk solids from the butter, which is great for several reasons:

  • Higher smoke point for infusions, without the worry of burning precious cannabutter.
  • Longer storage time in freezers or refrigerators without spoiling or getting moldy.
  • Improved taste, quality, and health in recipes.

Add the sticks of butter you wish to use into a pot on low heat until they melt. While melting, scoop the creamy froth and extra water off the top of the low-simmering butter and discard until no more white froth or water is left, leaving only the warm golden glow of a pot of clarified butter to infuse with! 

Canna Oil

Cannabis-infused oil–aka cannaoil–can be used in a wider variety of recipes or even as a tincture. The biggest use for canna oil these days is for making DIY cannabis gummies at home. You can also put a few drops of oil into a smoothie, salad dressing, or even a cocktail! Here are just a few great reasons why cannaoil is awesome:

  • There are several different oils to infuse with, including olive, avocado, and coconut.
  • The high-fat content of MCT coconut oil makes a great carrier oil for decarbed weed, and has beneficially high omega-3 fatty oil content.[3]
  • Add a teaspoon of sunflower lecithin per every cup of oil you use. This dynamic powder helps bind and emulsify the carrier oil and cannabinoids masterfully, creating a better end product. [4]
  • You can even make your very own potentially medicinal lotions, balms, and creams with activated cannaoil!
  • Cannaoil also stores well at room temperature in a cool, dark storage area for years.  Use tinted glass if possible when storing. 

Cookware & Devices that Infuse Cannabis

Equipment to infuse your decarbed weed into butter or oil can be as simple and affordable as you want it to be. It’s up to you whether you want to use something like a saucepan, sauté pan, or a high-tech gadget that automatically heats your mixture to a perfect temperature for several hours to get the most out of it. 

Stovetop

Take the decarboxylated cannabis you just activated, and use at least a ¼ to a full ounce, depending on how much you wish to infuse. To create an even balance, use as much butter or oil as decarbed cannabis. The more weed you use, the stronger the result will be. 

  1. One cup of butter or oil per ¼ oz of decarbed cannabis used should be your target. 
  2. The longer you infuse, the stronger the result will be. 
  3. Target temperature should be somewhere in the range of 160-200ºF. 
  4. The important thing is to keep the temperature low enough that nothing will burn, which will ruin the potency and taste. 
  5. Keep stirring! 
  6. Once time is up, strain into a cheesecloth or mesh strainer to filter out all of the leftover plant material. 

Congrats, you now have cannabutter or cannabis-infused oil to make edibles with! Be sure to refrigerate or freeze cannabutter. 

Automatic Infusion Machine

All of that standing over a hot stovetop and stirring, stirring, stirring can get annoying sometimes, so that’s why some humanoid genius came up with the automatic infusion machine. 

This dynamic device can infuse oil, butter, and decarbed weed automatically according to a digital program it runs on. These devices are great because they can hold at an exact temperature and automatically stir the mixture, while you go about your day away from the stovetop. The alien in me loves advanced technology, so I highly recommend these devices to make your edibles. There are also some models that not only infuse, they decarb first, too–highly recommended!

Water Immersion/Sous Vide

Some humanoids use vacuum-sealed sous-vide bags or mason jars to do a water infusion of decarbed weed and a carrier like butter or oil. Essentially, a large pot of water is boiled to a range of about 160-185ºF anywhere from 4-8 hours (again, longer means stronger). Once complete, the cooled-down jar or bag gets strained through a cheesecloth or mesh strainer to make your desired edibles!

Double Boiler Method to Infuse Cannabis

Using two pots to infuse a carrier and decarbed weed is known as a double boiler. Stack two pots that fit into one another and fill the bottom pot with enough water to slightly fill the gap between the two pots. This simmer will keep your carrier and decarbed weed that gets put into the top pot from burning, and will regulate the temperature. 

  1. Use a thermometer to keep the infusion in the 160-180°F range to keep everything from burning. 
  2. Refill the water in the bottom pot if it evaporates significantly throughout the average 2-4 hour infusion time. 
  3. Stir regularly and use a cheesecloth or mesh strainer to remove remaining plant material. 
  4. Be careful, everything will be very hot, let it cool before handling and storing/refrigerating!

What to Do With My Newly Infused Cannabutter or Cannaoil?

Now that the hard stuff is out of the way, have some fun coming up with your recipes or trying your hand at some new and old classics. 

Find a Gummy or DIY Kit

Gummies are one of the most popular and portable edibles. Instead of overpaying at the dispensary, use your cannaoil to make your own stash. Many kits online include sugar, molds, and all the essentials—just add your homemade cannabis oil.

Look Up Your Favorite Baked Good Recipe–Just Substitute Cannabutter!

Always wanted to take your Grandma’s delicious brownie recipe to a whole other level? Well, anything is possible with baked goods and cannabutter! Choose from your favorite cookie, cake, brownie, Rice Krispies treats, or even cake icing recipe to make them true edibles! You can even just add cannabutter to anything that calls for butter–or doesn’t–like a cup of coffee or dessert! No matter what recipe you choose to use, share your treats and make new friends everywhere you go!’

Contact Us

Have questions about growing your own cannabis, decarboxylation, or how to make edibles with your trim? Reach out to the experts at Multiverse Beans. We’re here to help you grow, harvest, and create magic with your plants—from seed to treat.

Ready to buy cannabis seeds online and start your own grow? Check out our seed bank and start planning your next batch of homemade cannabis edibles.

For more how-tos, growing guides, and insights into activating and infusing cannabinoids, check out more of the Multiverse Beans blog. Ready to create something magical with your harvest? Contact us today.

References

  1. Filer, C. N. (2022). Acidic cannabinoid decarboxylation. Cannabis and Cannabinoid Research, 7(3), 262–273. https://doi.org/10.1089/can.2021.0072
  2. Wang, M., Wang, Y. H., Avula, B., Radwan, M. M., Wanas, A. S., van Antwerp, J., Parcher, J. F., ElSohly, M. A., & Khan, I. A. (2016). Decarboxylation study of acidic cannabinoids: A novel approach using ultra-high-performance supercritical fluid chromatography/photodiode array-mass spectrometry. Cannabis and Cannabinoid Research, 1(1), 262–271. https://doi.org/10.1089/can.2016.0020
  3. Sandupama, P., Munasinghe, D., & Jayasinghe, M. (2022). Coconut oil as a therapeutic treatment for Alzheimer’s disease: A review. Journal of Future Foods, 2(1), 41–52. https://doi.org/10.1016/j.jfutfo.2022.03.016
  4. O’Sullivan, S. E., Jensen, S. S., Kolli, A. R., Nikolajsen, G. N., Bruun, H. Z., & Hoeng, J. (2024). Strategies to improve cannabidiol bioavailability and drug delivery. Pharmaceuticals (Basel, Switzerland), 17(2), 244. https://doi.org/10.3390/ph17020244

Throughout my never-ending interdimensional travels, I have yet to find a plant as dynamic as cannabis. There are thousands of different strains and cannabis seeds, all with their distinct personalities, including different THC (tetrahydrocannabinol) and CBD (cannabidiol) ratios. As the primary cannabinoids found in cannabis, these two are responsible for the potential psychoactive or medicinal effects that make weed so fascinating!

Cannabis seeds deliver all types of unique ratios of THC and CBD compounds, or cannabinoids. Let’s discover where these cannabinoids come from, the ratios they’re often found in, and what factors you, as a home grower, can control to positively affect them.

What Are THC And CBD?

As the most unique plant in the multiverse, cannabis seeds can develop well over 100 different cannabinoids and over 560 different compounds. Delta-9 THC and CBD are found in the highest abundance, along with the various terpenes we all know and love. [1][2]

The effects after consumption of THC are psychoactive, while CBD is known to give consumers a more medicinal, non-psychoactive feeling. This stems from the humanoid body’s own endocannabinoid receptors in the brain that can connect with these compounds after consumption and metabolization. [1]

How Do Cannabis Seeds Produce THC And CBD?

Over the last 50 years, humanoid researchers have done some amazing work in cannabis plant science. Cannabis seeds don’t contain any actual THC or CBD when dry; instead, they develop their acidic forms first—THCA and CBDA—during the cultivation process. Once exposed to heat via smoking, vaping, or baking, these acidic forms are “activated” to their psychoactive and potentially medicinal forms of THC and CBD. [2]

But before that happens, THCA and CBDA develop from the OG of cannabinoids—cannabigerol, or CBGA. Whichever prominent cannabinoid your cannabis seeds eventually develop into during cultivation depends on how the plant metabolizes a specific genetic enzyme that can take either form. [2]

However, for you, the home grower, the info is already out there on what cannabis strains are THC-dominant, CBD-rich, or a hybrid of both—you just need to do the research to find out which is which!

THC & CBD Cannabis Seed Ratios

You may already be familiar with all of the different types of cannabis seeds that growmies like my intergalactic buddy, Uncle Paulie, feature on Multiverse Beans. These include sativa, indica, hybrid, feminized, regular, photoperiod, and autoflower seeds

However, beyond that is the distinction of Type I -Type IV cannabis seeds and strains. These seeds are commonly known as THC-dominant, balanced, CBD-dominant, CBG-dominant, essentially hemp. Each type has unique cannabinoid concentrations, potential effects, and related strains. [3]

High THC & Low CBD Cannabis Seeds (Type I)

Cannabis seeds that contain high amounts of THC and lower amounts of CBD in their cannabinoid concentrations are known to many as Type I strains [3]. These fit the profile of many of both the classic and modern, psychoactive-first strains that the majority of cannabis consumers grow and enjoy! 

A lot of these types of cannabis seeds can eventually grow up to be psychoactive powerhouses that often clock in with anywhere from 20-30% THC these days. They are often found in ratios of 20:1 THC:CBD content. These include:

  • GG#4 is a powerful hybrid strain that is a cross of Chem’s Sister, Sour Dubb, and Chocolate Diesel.  It’s known for its stinky, chocolatey, and insane resin production, which is full of THC-rich cannabinoids that often stick to the fingers like glue!
  • Kush is an often bright green-to-purple variety of weed that has many different piney and gassy flavors, aromas, and strain varieties. However, no matter the strain, Kush is known for its THC-dominant, potentially sedative effects. Many Kush crosses, like the classic OG Kush Kush are hybrids that feature the best of THC-dominant, sativa, and indica potential. 
  • Runtz strains are today’s most popular crosses. With a massive variety of crosses hitting the market every day, the THC-rich potential of this fruity, candy-like powerhouse can also deliver a wide scope of flavors and hybrid effects. 

Balanced THC:CBD Cannabis Seeds (Type II)

A little less prevalent in today’s THC-dominant cannabis seed and strain marketplace are Type II seeds that create a balanced cannabinoid ratio and potential effect. Often produced in 1:1 THC: CBD ratios, Type II strains promote the entourage effect, which is known to provide a more enhanced ability to fight inflammation and other ailments. [3] [4]

These seeds are primarily used to grow weed that produces a less intense THC high that is balanced by potential medicinal effects from its CBD-rich counterpart. Breeders have also been able to combine other less-known cannabinoids like THC-V and CBD-V to create other unique, balanced 1:1 strain types. Here are some great balanced seed choices to go Type II.

  • CBD Skunk Haze is a classic, balanced strain from Amsterdam’s famous Dutch Passion Seed Company. This Cup-winning strain is capable of producing a relaxing, hybrid effect due to its 1:1 ratio. Aroma and flavor profiles are often reminiscent of either parent–spicy and hazy and/or fruity and skunky. 
  • Afghan Pearl CBD hails from another legendary Amsterdam-based breeder, Sensi Seeds. This cross of Kush and Jamaican Pearl provides another balanced 1:1 experience for the consumer while pleasing the palate with fruity, dank, and earthy flavors. 
  • Black Jack CBD is a balanced, 1:1 cross of Black Jack and a CBD-rich cut of Diesel, bred by Sweet Seeds. This hybrid is a nice grower capable of heavy yields full of lemon-citrus and incense-like terpene profiles. 

High CBD: Low THC Cannabis Seeds (Type III)

For some humanoids (and interdimensional beings), cannabis seeds and strains containing THC can often be too much, producing adverse reactions and a reluctance to try it again. That’s why Type III cannabis seeds are great–there are minimal to no psychoactive effects, and they are one of the top choices for potential medical use for so many purported ailments. 

Type III weed strains feature the highest in cannabidiol, while THC cannabinoids are very minimal and non-existent. Ratios for these can vary widely–some strains have 20:1 CBD:THC, while others may be more along the lines of something like 4:1. Strains like the few below are often go-tos for growers and consumers looking for possible medicinal relief without any fear or need of THC psychoactivity. [3]

  • CBD OG is bred by my friends at Cali Connection and was a High Times Cannabis Cup winner in 2015. This high-cannabidiol gem is a hybrid that reportedly yields big harvests and can contain as much as 70% CBD at 2:1. 
  • Doctor Seedsman CBD seeds are capable of a ridiculous 30:1 CBD:THC ratio. This Seedsman creation is known to produce plants capable of up to 20% cannabidiol with as little as 1% THC! This strain is a top pick for those seeking the potential of therapeutic effects.
  • Treasure Island cannabis seeds by Sin City Seeds feature a unique 4:1 ratio with anywhere from 8-16% CBD and 2-4% THC come harvest time. These feminized photoperiod beans are known to have slight sativa-leaning effects that hang out in the background of a huge amount of CBD cannabinoid content. 

High CBG, Low THC Cannabis Seeds (Type IV)

The title above says it all–Type IV seeds are marvels of modern-day breeding that feature the cannabinoid CBG almost exclusively. CBG is another non-psychoactive cannabinoid capable of even more therapeutic possibilities for growers. 

Seeds options like Dutch Passion’s CBG Force are a great pick for any grower looking to dip their toes into the world of CBG or perhaps see what all the talk is in regards to its therapeutic potential. Growers will be rewarded with frosty, CBG-rich yields that can feature up to 15% CBG!

How Can a Grower Increase THC & CBD Levels?

Even though the cannabinoid content within a cannabis seed is genetically pre-determined, that doesn’t mean it will express the same way every time it’s grown. How you cultivate your weed plants is always super important to get the most potential out of your grow. While many growers focus on final harvest yields, it should really be potency and quality that matter most.

Genetics

Cannabis genetics are the first line of defense a grower has to ensure the highest levels of cannabinoids will be present come harvest time. Purchasing your cannabis seeds from a breeder or seed bank with a proven, respected reputation and solid online reviews helps gauge whether your genetics will deliver big on cannabinoid concentration and desired effects.

Growing Conditions

How efficiently you provide your cannabis plants with the proper growing conditions can pave the way for the maximum potential of your cannabinoid content. Utilizing nutrients, lights, and the growing environment the right way increases cannabinoid and terpene content. Allowing your plants to grow with vigor creates less stress and allows them to flourish to the finish line and beyond.

Harvest Timing

Knowing when the time is right for you to harvest your cannabis plants is super important to ensure all of the hard work you’ve done up to that point doesn’t go to waste! Harvesting early results in plants with more CBD and less psychoactive effects, whereas harvesting a little later means increased THC and psychoactivity. Harvest even later than that, and you may just find yourself dozing off regularly from the sleepy CBN-rich weed you just grew. 

Curing 

After determining the right time to chop your plants down—often based on trichome color—the final step is ensuring your buds are properly cured. Curing is when buds slowly dry and break down excess moisture and plant compounds. This process ensures your weed smells, tastes, and burns properly while delivering the cannabinoid effects it should.

The last thing you want is bland bud with no terpene profile, low potency, and that barely stays lit.

Curing cannabis properly can take up to 8 weeks if humidity levels are consistently maintained between 60–65% RH. Find the sweet spot:

  • Curing too fast preserves bitter-tasting chlorophyll
  • Curing too slow retains excess moisture that can cause mold

Enhance The Cannabinoid Ratio That Fits Your Needs

All the tools and factors you need as a home grower are in your hands. Knowing the breeder, strain, strain type (Type I–IV), and typical cannabinoid content ahead of time goes a long way.

Once you understand what kind of psychoactive or medicinal effects you want from the ratio of THC, CBD, and other cannabinoids in your seed selection, you must then be aware of how you grow, harvest, and cure them in order to reach their maximum potential. Following these simple rules will ultimately lead you to enjoy this versatile plant as much as I do!

Contact Us

Not sure which cannabis seed strain or cannabinoid ratio is right for your goals? Whether you’re aiming for high THC, balanced CBD, or a unique Type III or IV variety, the team at Multiverse Beans is here to help. We’ll guide you through strain selection, breeder insights, and growing techniques to ensure your plants deliver the effects you’re looking for. Reach out today and take the guesswork out of finding your perfect cannabinoid profile.

References

  1. Chayasirisobhon, S. (2020). Mechanisms of action and pharmacokinetics of cannabis. The Permanente Journal, 25, 1–3. https://doi.org/10.7812/TPP/19.200
  2. Chandra, S., Lata, H., & ElSohly, M. A. (2020). Propagation of cannabis for clinical research: An approach towards a modern herbal medicinal products development. Frontiers in Plant Science, 11. https://doi.org/10.3389/fpls.2020.00958
  3. Márquez, F., Lozada, M., Idaszkin, Y. L., González-José, R., & Bigatti, G. (2022). Cannabis varieties can be distinguished by achene shape using geometric morphometrics. Cannabis and Cannabinoid Research, 7(4), 409–414. https://doi.org/10.1089/can.2020.0172
  4. Christensen, C., Rose, M., Cornett, C., & Allesø, M. (2023). Decoding the postulated entourage effect of medicinal cannabis: What it is and what it isn’t. Biomedicines, 11(8), 2323. https://doi.org/10.3390/biomedicines11082323

Let’s face it—we all get stressed. This means humanoids, aliens, even cannabis plants! For better or for worse, stress is a common phenomenon among all growers of the good weed too. However, a properly informed approach to low stress training your cannabis plants (LST) will always provide the best results.

If you’re a new grower, you may be saying to yourself, “So what is low stress training for cannabis plants? How do I do it, and when do I do it?” These are all questions your growmie from another dimension—Greg the Alien—is here to help answer!

What Is Low Stress Training?

Cannabis plants—especially those grown indoors—naturally grow straight up, a phenomenon known as apical dominance. So by gently bending and tying the smaller branches to go away from the main branch, the light that typically shines directly down on top of the canopy can now be distributed to plenty of more bud sites. Along with a flatter canopy, LST also allows for improved airflow, keeping mold and mildew from developing courtesy of stagnant, cluttered air.

Now that the plant is more spread out horizontally, the newly optimized branches and stems will also provide a bigger overall yield. I’ve never met a grower—humanoid or alien—that doesn’t want more bud after all is said and done with their plant, so that’s why LST is another no-brainer!

Cannabis plants of all sizes, shapes, and strains can be optimized for low stress training—indoors and outdoors. The minimally stressful nature of doing this won’t affect your plant negatively compared to other high-stress methods.

What Are Some Benefits Of Low Stress Training Cannabis Plants?

The benefits of low stress training have been proven time and time again by growers new and old. They LST for a variety of reasons that may or may not always be so obvious to everyone.

LST Allows For More Control Of Your Plant’s Size & Shape

As mentioned, aside from valuable indoor light or sunlight only focusing on the main bud site or “cola,” low stress training is any grower’s opportunity to mold their cannabis plants into the sizes and shapes they wish.

Whether that means spacing out your branches more optimally for better light and airflow, or simply trying to reduce the height of an indoor grow, LST gives the grower the most control in this area. This is critical for any grower with limited space, or even the outdoor grower looking to keep things scaled down for better discretion from curious eyes.

Increased Growth Vigor

LST also improves growth vigor throughout the entire cultivation process—a most valuable factor for any grower. When a cannabis plant is stressed by its environment or perhaps a lack of water or nutrients, it will create an internal response that affects how it grows. Low stress training creates a beneficial internal response that redistributes energy from the main branch to all branches.

This very factor alone creates an opportunity for cannabis plants to grow healthier and stronger—in a more balanced and efficient way.

Increased Quality, Potency, And Yields

Creating those additional bud sites courtesy of low stress training ultimately leads to more potent, high-quality, and generous overall yields. Due to the increased photosynthesis and weight-bearing strength created from LST, the cannabis plant flower buds develop bigger, with more metabolites and subsequent cannabinoids and terpenes.

Growers of successful harvests are also rewarded when using low stress training techniques to maximize quality and yield.

When To LST

Beginning the process of low stress training your cannabis plants should start fairly early in the vegetative stage. Most growers agree that you should ensure at least 4–5 leaf nodes have been established after germination in the early weeks of veg before starting any LST.

By contrast, performing LST at any point in the flowering stage usually proves to be detrimental in most cases since the branches are more susceptible to snapping or breaking off completely at this point in their lifecycle.

Autoflowers And LST

Autoflowers transition from vegetative stage to flowering much faster than photoperiod plants. That’s why it’s super urgent to begin low stress training early in the veg stage (2–3 weeks) before flowering starts, typically after as little as 4 weeks! Autoflowers are also very vigorous growers when bred from quality genetics and breeders, making them very resilient to LST and environmental stressors.

However, due to their smaller statures, autoflower growers must be careful not to overstress compared to that of a larger photoperiod plant. Visibly stunted growth is often the result of overstressing an auto.

Methods Of LST

Over time, growers have developed a few different techniques to LST efficiently. Growers of all skill levels more commonly use some LST methods, while more advanced growers adopt others. No matter how green your thumb is, check out a few ways to best LST while making gentle and gradual adjustments.

Bending & Tying Branches

Bending and tying branches is the most tried and true method of low stress training. To do so, growers do as the title suggests—gently bend stems and branches away from the main branch and cola towards a space with less crowding from other branches and bud sites. Do so with even pressure until you feel slight resistance.

Next is tying the bent branches to secure them in place. There are a few tools and materials often used in conjunction with this method of LST. These include:

  • Twist ties – These tiny guys use their plastic or rubber coated, wiry selves to keep bent branches and stems in place without cutting into or damaging them. Garden wire can also be used, but be sure that it will not dig into the stem or plant tissue and cause any damage.

  • Support stakes – Different from the support steaks some carnivorous humanoids consume when going through a rough patch, support stakes are used to support the tied-down branches once you’ve affixed the twist ties to them. These stakes can be placed anywhere in the soil for easy access without pulling or pushing the branches and overstressing.

  • Drill – Tiny holes can also be drilled along the top perimeter of your flower pot container so that the twist ties can be run through them to anchor low stress trained branches in place. This is just another great option growers have to DIY their plants for low stress training.

  • LST clips – Clipping one of these handy attachments to your branches safely maneuvers them to a desired location without any tying or additional support.

Best Practices

Ensure that the branches you are applying LST to are filling any open space or gaps in the cannabis plant’s canopy without adding any extra shade to any others. As more and more branches, stems, and bud sites begin to develop, you should keep applying LST to them until about midway through the vegetative stage.

If you’re running autoflowers, keep your LST in place until they begin the flowering process. Overall, when growing autoflower or photoperiods, avoid continuing LST once you see signs of flower development.

Always be sure to use gentle force when applying low stress training techniques, while always regularly checking on your ties, should any adjustments need to be made. In the event a branch or stem gets damaged, products like plant tape can swoop in to the rescue—it’ll be OK, my growmie!

Other Methods Of LST

After a newer grower begins to understand and successfully apply the basics of LST, there are a few other ways to manipulate your plant’s size, structure, and eventual yield.

Scrogging

Also known as Screen of Green, this LST method utilizes horizontal netting within a frame that is placed over the plant canopy sometime during the halfway point of the veg stage. The plant’s branches can be interspersed and weaved within the screen, making the best use of any open spaces available, while creating increased lateral growth.

Topping

Topping is when a grower cuts down the main stem of the cannabis plant early on in its development to make room for more bud sites and colas. Topping is a common form of stress training that can technically be considered a high-stress training method as well, depending on how much the grower uses care to do so. Many growers typically combine this method with bending and tying branches.

Weight Training

Some growers like to attach specifically designed, weighted clips and attachments to their stems and branches to get them accustomed to low stress and to maintain a specific direction in which to grow. These can be used in conjunction or in place of tying to support branches.

Perform LST For A Variety Of Benefits

Sometimes stress can put a lot of pressure on the best of us. Cannabis plants are so unique that not only do they feel pressure too—they respond accordingly. Due to its sheer ability to improve harvest yields (as most growers can attest to), low stress training is one of the most important and beneficial steps any grower can take to ensure maximum results when all is said and done.

Just a few simple and small steps and tools can go a long way to ensure your cannabis plant trains right for the big win!

Start Training With The Best Seeds

Looking for cannabis seeds that thrive with LST? Shop premium feminized seeds, autoflower seeds, and high-yield strains at Multiverse Beans—your go-to online cannabis seed bank for elite genetics. Get started today and take your grow to the next dimension! Contact us to learn more.

References

 

  1. Beveridge, C. A., Rameau, C., & Wijerathna-Yapa, A. (2023). Lessons from a century of apical dominance research. Journal of Experimental Botany, 74(14), 3903–3922. https://doi.org/10.1093/jxb/erad137
  2. Bernstein, N., Gorelick, J., Zerahia, R., & Koch, S. (2019). Impact of N, P, K, and humic acid supplementation on the chemical profile of medical cannabis (Cannabis sativa L.). Frontiers in Plant Science, 10, 736. https://doi.org/10.3389/fpls.2019.00736
  3. Massuela, D. C., Munz, S., Hartung, J., Nkebiwe, P. M., & Graeff-Hönninger, S. (2023). Cannabis Hunger Games: Nutrient stress induction in flowering stage – Impact of organic and mineral fertilizer levels on biomass, cannabidiol (CBD) yield, and nutrient use efficiency. Frontiers in Plant Science, 14, 1233232. https://doi.org/10.3389/fpls.2023.1233232
  4. Saloner, A., Sacks, M. M., & Bernstein, N. (2019). Response of medical cannabis (Cannabis sativa L.) genotypes to K supply under long photoperiod. Frontiers in Plant Science, 10, 1369. https://doi.org/10.3389/fpls.2019.01369

 

  











 

You don’t need to be Sherlock Homegrow to figure out whether you bought quality cannabis seeds before spending precious dollars and energy on cultivating them to harvest.

Way too many times I’ve seen some of my growmies get burned on cannabis seeds that either failed to germinate, became hermies, or had stunted growth—and my little extraterrestrial heart goes out to them! But if they had just done a few visual tests or stuck with reliable seed banks like Multiverse Beans, those same folks would already be puffing tough on some of their own homegrown funk. Instead, they’re in a funk because the money and energy they put into growing those seeds turned out to be a massive waste.

That’s why I created this little guide to identify quality cannabis seeds even before you rip the seed pack open. Follow along as we explore how to avoid buying bunk beans!

Cannabis Seed Biology

Believe it or not, cannabis seeds are actually tiny fruits called achenes, which contain the seed and its shell [1]. These achenes (we will still refer to them as seeds going forward!) can have different appearances for different varieties and strains.

The protective outer shell is also known as a seed coat or testa. This protects the seed from any damage inflicted upon it by the environment, pests, temperatures, and even heavy-handed postal employees!

Within the protective shell is the embryo, which is the living part of the seed that will grow a taproot once germinated and eventually mature into a cannabis plant. Within this embryo are all of the genetic markers of the particular strain or seed type you selected.

Nutrient storage surrounding the embryo sustains it until the seedling starts photosynthesis after germination. It’s also important to note that according to one important U.S. regulatory body, cannabis seeds do not contain any actual cannabinoids like THC or CBD until they’re germinated and begin to grow into a full plant [2].

Appearance And Color

There are a few telltale signs of a quality cannabis seed stock with just a quick visual check. Many different varieties of cannabis plants produce seeds that may look a little different from each other—and that’s OK! How the seed looks doesn’t matter in terms of quality; just check to see that they fall into any of the color varieties below:

Tiger-striped or tortoise-shell-looking seeds have spots and stripes all around that resemble those found on either type of wild animal. This design is usually found throughout beans with a gray or brownish overall tint. These seeds will have a glossy sheen like any other quality seed to signify health.

Sometimes, beans can be gray, too! Gray seeds can sprout boundless harvests as well—just be sure they have the same telltale glossy shine on the outer shell.

Cannabis seeds that are dark brown are in the same ballpark—as you humanoids like to say. They are capable and healthy enough to grow killer cannabis; just make sure they have that shine!

Overly pale, green, or white seeds are often a sign that the beans you have in your possession may be immature or perhaps damaged in some way. The only real way to test for viability is with the float test, which I will cover shortly.

Size And Shape

Quality can also be assumed from their overall size and shape. Just about all of them feature the same teardrop shape with a round end that curves to a blunt tip. Any bean that doesn’t feature the same basic body shape may very well have germination or cultivation performance issues.

Some humanoid researchers have also shown that they can tell what strain a specific seed is through a chemical analysis known as chromatography. Regardless of what strain a seed will grow into, each seed should have a healthy-looking, average-sized mass compared to being overly small or misshapen.

Firmness, Smoothness, And Durability

Using your fingers to test firmness is also another easy indicator of quality. They should be smooth to the touch without any roughness or a coarse texture.

Quality beans should also be firm to the touch, without any hollowness or a lightweight feeling once gently pressed. A solid, firm outer shell demonstrates a fully mature seed compared to a more hollow-feeling seed, which indicates it’s underdeveloped [3].

Keep an eye out for cracks or damage to the seed when checking for quality during the firmness test. Often, beans may very well be high quality—they just happened to be damaged during shipping, packaging, or storage.

Cannabis Seed Age

Older cannabis seeds are more prone to a decreased germination rate. This is often due to adverse climate conditions or bacterial or fungal diseases that have developed over time [4]. That’s not to say that seeds stored properly can’t still grow killer weed after a few months to years, as my previous guide to properly storing cannabis seeds mentioned before.

Younger seeds that were bred more recently will always give you the best chance of germination and a successful final harvest compared to rolling the dice with older seeds [4]. However, as many of my fellow seed junkies can attest, it’s often easier said than done!

Beware Of Where You Buy

As mentioned in an earlier blog, you can avoid having to deal with any bad seeds by just doing some online research about the breeder and/or seed bank to get an idea of where your seeds are originating from. Online reviews are great sources to determine whether your seeds have good genetics that will grow up big and strong—and won’t herm either!

A reputable breeder like Multiverse Genetics is going to ensure quality genetics, reliable packaging, and seeds that have been stored properly before being delivered to you.

Uncle Paulie’s Smash Test

Speaking of MVG, my fellow growmie, Uncle Paulie, likes to test potential seed viability his own way:

  • Set the seeds on a sturdy surface like a coffee or kitchen table

  • Apply pressure from your thumb and press firmly onto the seeds

  • If the seeds become flat or crack, they’re probably underdeveloped and won’t germinate properly

  • Mature seeds have more gravity and tend to survive the test before being germinated

The Float Test

The float test observes the buoyancy or floatability of a cannabis seed. This simple-to-do test is done by a lot of folks; however, it’s still not scientifically proven. Know that the only true test of viability for the home grower is to germinate [5]. That said, here’s how to do the float test:

  • Grab a drinking glass and fill it with room-temperature water. Ensure it’s room temp so that any temperature extremes don’t interfere

  • Now go ahead and drop your seeds into the glass of water with enough space to move around

  • Let the seeds remain in the glass of water for an hour or two. Notice whether the seeds sink or float

  • Seeds that sink to the bottom have more density and may indicate a mature cannabis seed that has the possibility to germinate successfully

  • Seeds that float tend to demonstrate that they’re less developed or may have other issues that will possibly prevent successful germination

If you do perform this test, do it right before you are ready to start growing, so that the water-soaked seeds don’t develop mold or start to germinate on their own. If you’re not quite ready to grow yet, be sure to dry them off thoroughly before storing them away.

Cannabis Seed Germination

While the float test is a pretty reliable barometer to judge whether you have quality cannabis seeds or not, germination is definitive proof of seed quality and viability.

Whether you like to use the paper towel method or germinate directly in soil, the only real way you’re going to know whether the beans you bought are up to snuff is to start them. If they begin to develop stunted seedlings or perhaps don’t even germinate at all, then you will ultimately know where you stand.

Test To Ensure Your Seed Purchase

Any of the above visual and physical tests are great indicators of whether you bought quality beans on their own. However, in combination, they create a better overall determination that is more comprehensive—up until float testing and germination.

If you buy beans from poorly reviewed or non-reputable sources, you’re always going to be rolling the dice. Do the smart thing and rely on quality American seed banks like MVB that you can trust to grow you some funk, not put you in one! 

Contact Multiverse

Ready to grow with confidence? Skip the guesswork and shop cannabis seeds online from trusted breeders at Multiverse Beans. Whether you’re hunting for high-quality genetics, better germination rates, or just want to avoid bunk beans, we’ve got you covered. Explore our curated online cannabis seedbank or contact us for help finding the seeds that match your grow goals today.

References

  1. United Nations Office on Drugs and Crime. (2022). Recommended methods for the identification and analysis of cannabis and cannabis products (Revised and updated). United Nations.
  2. U.S. Food and Drug Administration. (2024, July 16). FDA regulation of cannabis and cannabis-derived products, including cannabidiol (CBD). U.S. Department of Health and Human Services.
  3. Márquez, F., Lozada, M., Idaszkin, Y. L., González-José, R., & Bigatti, G. (2022). Cannabis varieties can be distinguished by achene shape using geometric morphometrics. Cannabis and Cannabinoid Research, 7(4), 409–414. https://doi.org/10.1089/can.2020.0172
  4. Sorokin, A., Yadav, N. S., Gaudet, D., & Kovalchuk, I. (2021). Development and standardization of rapid and efficient seed germination protocol for Cannabis sativa. Bio-protocol, 11(1), e3875. https://doi.org/10.21769/BioProtoc.3875
  5. França-Neto, J. D. B., & Krzyzanowski, F. C. (2019). Tetrazolium: an important test for physiological seed quality evaluation. Journal of Seed Science, 41(3), 359-366.

Fungi have an interesting relationship with a lot of things. However, it’s the connection between certain species of fungi and plants like cannabis that is particularly special. By incorporating specific species of fungi with your hydro system, living soil, or germinated cannabis seeds, home growers can reap the many rewards of this unique and symbiotic relationship throughout the entire cannabis grow cycle.

What Are Mycorrhizae?

Aliens and fungi have always gotten along, going way back to the early days of the cosmos. Humanoids can, of course, thank us for bringing certain varieties of fungi here for your enjoyment as well! In terms of specific types of fungi, some also get along very well with my favorite plant—cannabis. We call this mutually beneficial relationship between fungi and plants mycorrhizae.

More specifically, Arbuscular Mycorrhizal Fungi (AMF) are a specific type of Plant Growth-Promoting Microorganisms (PGPMs) that live symbiotically with plant roots of the majority of plant species here on your spinning blue ball called planet Earth. PGPMs and AMF improve plant nutrition and affect the release of biologically active substances such as phytohormones, vitamins, and enzymes.

Four Developmental Features Of AMF

  • Arbuscules – AMF feature areas where fungi and plants exchange nutrients. These sites are known as arbuscules and are found as tree-like structures within the cellular structure of the host plant’s roots.
  • Vesicles – Root tissue and surrounding areas in the soil feature vesicles, which are storage structures that are developed by the AMF within tissue found in the plant’s roots or the immediate soil area. The fungi nourish themselves from nutrients and lipids within these structures.
  • Hyphae – Hyphae are thin threads of filament that develop down into the soil or hydroponic system. These structures are important for several developmental roles with plants—particularly in how they increase the surface area where roots absorb nutrients. They also provide increased access to nutrients beyond just the root zone.
  • Spores – Not just found on that loaf of moldy potato bread on top of your refrigerator, fungi spores are what AMF and all fungi use to reproduce. In ideal environments, spores germinate, colonize, and extend their fungal networks, known as mycelium.

Best Mycorrhizae For Cannabis Seedlings And Plants

Researchers and growers have honed in on a few specific types of fungi that are most beneficial to cannabis seedlings and many plants in general—Rhizophagus Prolifer and Rhizophagus Aggregatus. Both species of AMF are in the Glomeraceae family and are known to growers far and wide as great fungi to use for mycorrhizae during cannabis cultivation.

These strains have shown excellent results not just in cannabis cultivation but also in crops like legumes, artichokes, and soybeans.

However, the AMF species known as Rhizophagus Irregularis is another standout. According to researchers, it has demonstrated a tremendous ability to benefit cannabis seedlings in particular.

Benefits Of AMF For Cannabis Seedlings

Significant factors like bigger plants with more overall biomass, root length, and nutrient uptake were observed after several trials using AMF. In addition, the accumulation of key cannabis nutrients like phosphorus was noted.

Enhanced Root Growth

Researchers observed a 35% increase in root length in cannabis seedlings treated with AMF. This improved root colonization contributes directly to optimal root development and plant biomass, a must-have for healthy cannabis plants.

Increased Photosynthesis And Hormones

Mycorrhizae not only support underground development but also boost above-ground growth. More biomass, cannabinoids, and proteins were observed—leading to stronger and more vigorous cannabis plants. Even THC and CBD levels increased in cannabis seedlings treated with Rhizophagus Irregularis.

This species also showed a higher colonization rate compared to others, which means better support for cannabis plant health.

More Nutrient Uptake

AMF supports nutrient uptake by helping dissolve minerals and stabilize nitrogen. Rhizophagus Irregularis, in particular, aids the uptake of Magnesium, Nitrogen, and Phosphorus—three essential nutrients for potent cannabis strains and maximum yield.

They are also helpful in drought-prone environments, enhancing water retention and nutrient availability in dry grow climates.

Mycorrhizae Reduce Transplant Shock In Cannabis Seedlings

Rhizophagus Irregularis provides amazing stress resistance to cannabis seedlings, reducing transplant shock and improving plant resilience. Strong roots give plants the ability to cope with stressors while maintaining water and nutrient absorption.

How To Use AMF With Cannabis Seedlings

Watching this symbiotic relationship unfold is amazing whether you’re a soil grower or into hydroponic cannabis setups. Introduce mycorrhizal fungi into the soil or nutrient solution before or during cannabis cultivation for best results.

Look for products like Recharge, Great White, Mycos, Harrell’s, or Trifecta—especially those containing Rhizophagus Irregularis.

For hydroponic cannabis growers, AMF can be added to nutrient solutions (unless already included) to support cannabis seedlings throughout their grow cycle.

Start Your Cannabis Seedlings With Mycorrhizae For Best Results

For soil growers, sowing directly into living soil with AMF at the germination hole can kickstart that beneficial bond right from the beginning. Keep the soil moist and let nature take over.

Some growers like to pre-colonize their soil with AMF weeks in advance, or before flowering, to maximize the availability of nutrients—especially phosphorus, a crucial element for cannabis flowering.

How To Use Mycorrhizae During Cannabis Transplanting

To reduce transplant shock in cannabis, sprinkle powdered mycorrhizae around the root ball and into the transplant hole. This ensures contact with the roots and maximizes the fungi’s benefits.

Take Your Relationship To The Next Level

Humanoid researchers have shown that Rhizophagus Irregularis prepares cannabis seedlings for success. But don’t sleep on Rhizophagus Aggregatus or Rhizophagus Prolifer either—they’re excellent for promoting healthy cannabis growth, higher yields, and stronger resistance to stress.

When you’re starting with cannabis seeds, adding mycorrhizal fungi sets you up for healthier growth, optimized root systems, and ultimately, premium flower production. Whether it’s germination, transplanting, or flowering, let fungi elevate your grow.

Contact Multiverse Beans

Curious about which mycorrhizal fungi strains are best for your setup or need help incorporating AMF into your cannabis grow? The team at Multiverse Beans is here to guide you—from seedling support to flowering finesse. Whether you’re growing in living soil or hydro, we’ll help you pair the right cannabis seeds with proven microbial allies for a thriving, resilient grow. Reach out today and let us help you take your grow to the next level—naturally.

References

  1. Boonlue, S., Surapat, W., Pukahuta, C., Suwanarit, P., Suwanarit, A., & Morinaga, T. (2012). Diversity and efficiency of arbuscular mycorrhizal fungi in soils from organic chili (Capsicum frutescens) farms. Mycoscience, 53(1), 10–16. https://doi.org/10.1007/s10267-011-0131-6

  2. Dodd, J. C., Boddington, C. L., Rodríguez, A., Gonzalez-Chavez, C., & Mansur, I. (2000). Mycelium of arbuscular mycorrhizal fungi (AMF) from different genera: Form, function, and detection. Plant and Soil, 226(1), 131–151. https://doi.org/10.1023/A:1026574828169

  3. Spagnoletti, F., Carmona, M., Gómez, N. E., Chiocchio, V., & Lavado, R. S. (2017). Arbuscular mycorrhiza reduces the negative effects of M. phaseolina on soybean plants in arsenic-contaminated soils. Applied Soil Ecology, 121, 41–47. https://doi.org/10.1016/j.apsoil.2017.09.019

  4. Mota, I., Sánchez-Sánchez, J., Pedro, L. G., & Sousa, M. J. (2020). Composition variation of the essential oil from Ocimum basilicum L. cv. Genovese Gigante in response to Glomus intraradices and mild water stress at different stages of growth. Biochemical Systematics and Ecology, 90, 104021. https://doi.org/10.1016/j.bse.2020.104021

  5. Khalediyan, N., Weisany, W., & Schenk, P. M. (2021). Arbuscular mycorrhizae and rhizobacteria improve growth, nutritional status, and essential oil production in Ocimum basilicum and Satureja hortensis. Industrial Crops and Products, 160, 113163. https://doi.org/10.1016/j.indcrop.2020.113163

  6. Lyu, D. M., Backer, R., Robinson, W. G., & Smith, D. L. (2019). Plant growth-promoting rhizobacteria for cannabis production: Yield, cannabinoid profile, and disease resistance. Frontiers in Microbiology, 10, Article 1761. https://doi.org/10.3389/fmicb.2019.01761

  7. Kakabouki, I., Mavroeidis, A., Tataridas, A., Kousta, A., Efthimiadou, A., Karydogianni, S., Katsenios, N., Roussis, I., & Papastylianou, P. (2021). Effect of Rhizophagus irregularis on growth and quality of Cannabis sativa seedlings. Plants, 10(7), 1333. https://doi.org/10.3390/plants10071333

  8. Nacoon, S., Ekprasert, J., Riddech, N., Mongkolthanaruk, W., Jogloy, S., Vorasoot, N., Cooper, J., & Boonlue, S. (2021). Growth enhancement of sunchoke by arbuscular mycorrhizal fungi under drought condition. Rhizosphere, 17, 100308. https://doi.org/10.1016/j.rhisph.2021.100308

  9. Altomare, C., & Tringovska, I. (2011). Beneficial soil microorganisms, an ecological alternative for soil fertility management. In E. Lichtfouse (Ed.), Genetics, Biofuels and Local Farming Systems (Vol. 7, pp. 161–214). Springer. https://doi.org/10.1007/978-94-007-1521-9_8

  10. Taura, F., Morimoto, S., Shoyama, Y., & Mechoulam, R. (1995). First direct evidence for the mechanism of Δ¹-tetrahydrocannabinolic acid biosynthesis. Journal of the American Chemical Society, 117(39), 9766–9767. https://doi.org/10.1021/ja00143a024

  11. Nannipieri, P., Giagnoni, L., Landi, L., & Renella, G. (2011). Role of phosphatase enzymes in soil. In E. Bünemann, A. Oberson, & E. Frossard (Eds.), Phosphorus in Action (Vol. 26, pp. 215–243). Springer.

  12. White, P. J., & Hammond, J. P. (2008). Phosphorus nutrition of terrestrial plants. In P. J. White & J. P. Hammond (Eds.), The Ecophysiology of Plant-Phosphorus Interactions (Vol. 7, pp. 51–81). Springer.




Now that your harvest is trimmed, dried, and cured properly, it’s time to discuss proper storage for your cannabis flower and concentrates. While some of these best practices may seem obvious, others are not. So ride with me–Greg the Alien–and look at some science-backed ways to store your stash courtesy of several different peer-reviewed studies by humanoid researchers. 

Why Is Storing Weed and Concentrates Properly So Important?

You’ve spent several months, a little bit of money, and a lot of hard work on your weed plants–get the best out of your harvest for as long as you can. Storing weed and concentrates properly will ensure the best longevity and quality for as long as possible. 

Proper Storage Ensures Maximum Potency

The potency of cannabis gradually degrades if stored inefficiently. Cannabinol (CBN) is a cannabinoid formed from the breakdown of THC-rich trichomes in flower and concentrates over time. THC-rich weed and concentrates become less and less psychoactive the older they get, while CBN takes over and leaves consumers with a more drowsy effect than anything. [1]

If your goal is to preserve potency, learning how to store cannabis flower and protect concentrates is critical for long-term use.

Terpenes 

Terpenes factor in much more than they are given credit for when it comes to their contribution to potency and potential medicinal effects of cannabis. They’re also a big part of the aroma and flavor profiles of just about every strain and type of weed. 

Besides genetics, cultivation, harvest, and growing environment, age has a lot to do with how active and present terpenes are in the overall spectrum of cannabinoids for a certain strain. The inherent nature of terpenes leads them to be unstable, which means that as cannabis ages, the terpenes are depleted along with all their benefits, scents, and flavors [2].

The best approach to preserve terpenes is to store your weed at its peak dankness, using a Boveda humidity pack to keep relative humidity levels stable.

For maximum flavor and aroma retention, always store your cured buds in air-tight, UV-protected glass jars—it’s the gold standard for anyone who wants to keep weed fresh for months.

Scientific Studies on Storing Weed Properly

There have been quite a few studies on the effects of light, temperature, and air on cannabis and concentrate samples. Many of these studies have become the cornerstone of our understanding of how to store weed properly.

In one 2012 study, both concentrates and flower were monitored over 4 years under different conditions. Samples exposed to natural UV light and room temperature showed drastic THC reduction in just the first year. By year four, THC was virtually nonexistent and replaced by CBN [3].

If you’re wondering how long weed lasts in different conditions, this study offers a clear answer: improper storage = massive potency loss.

Temperature Degrades THC Rapidly—But Light Is Even Worse

Other researchers discovered that storing cannabis at room temperature can reduce THC levels by 3–5% per month. While CBN is the main culprit, light and temperature speed up degradation [4].

Once the temperature rises above 85°F, degradation increases exponentially [5]. So, if you’re storing your stash in a garage, attic, or sunny window—move it immediately!

Among all factors, light was found to be the most destructive. Even more than air or heat, UV exposure destroys cannabinoids in both flower and concentrate forms [6].

If you’re planning long-term storage, light protection is non-negotiable. This makes UV-blocking, airtight jars a must-have for any serious cannabis consumer or grower.

Storing Weed & Concentrates From the Elements

Many of the factors besides CBN that contribute heavily to the degradation of your stash can be relatively controlled. When it comes to fighting the elements and keeping weed premium, humanoids have it figured out pretty good. 

  • Light: Since UV rays can make quicker work of CBN taking over your THC-rich buds and concentrates, store your weed away from light sources, both natural and artificial, and utilize opaque or dark glass containers or jars.
  • Air: While you’re at it, get opaque or dark glass jars with airtight seals to keep oxygen out. Oxidation can break down cannabinoids and terpenes over time.
  • Temperature: Keeping your buds and concentrates out of the light and tucked away in a room temperature space at around 60–70°F will keep them preserved at peak potency and flavor for longer.
  • Humidity: Store cannabis at 55–65% RH to prevent drying out or developing mold. Add humidity control packs to each container.

How to Store Cannabis Flower Properly

UV-protected glass containers with a dark, opaque, or preferably blue tint will ensure degradation from light is minimized. Keep jars in a room-temperature, dark location, away from kitchens, bathrooms, or windows.

Once your buds are filled into each jar, add a Boveda pack to maintain ideal RH levels while they’re stored. Choose a Boveda pack size that coordinates with the weight inside the full jar. Refrigeration and freezing are not smart ways to store buds specifically, since they can damage cannabinoid-rich trichomes and produce condensation that leads to mold

If you’re a grower using premium cannabis seeds from Multiverse Beans, proper post-harvest storage is just as important as the cultivation itself.

How to Properly Store Cannabis Concentrates

There are many different types of cannabis concentrates, each with unique storage needs. Whether you’re preserving live resin, rosin, wax, shatter, or distillates, proper storage ensures potency, texture, and terpene profile stay intact.

Cold or Cool?

  • Refrigeration is suitable for volatile extracts like live resin, but be sure to let the product reach room temperature before opening.
  • Most concentrates do well at room temperature or slightly cooler, depending on type and packaging.

Storage Tips by Type

  • Wax, Budder, Shatter: For long-term storage, wrap in parchment paper and place in an airtight, UV-resistant glass jar. Silicone containers are fine short-term but absorb terpenes over time.
  • Live Resin: Needs cold storage to retain its vibrant terpene profile. For extended storage, consider vacuum sealing to prevent moisture exposure.
  • Rosin: Highly sensitive to heat. Store in a cool, dark place in an airtight glass container.
  • Distillates: More stable, but still store in airtight glass or syringe containers, away from heat and light.
  • Tinctures: Keep in dark-tinted bottles in a cool, dark area for extended shelf life.

Learning how to store cannabis concentrates is essential for extract users who want to preserve taste, potency, and consistency.

Additional Tips for Properly Storing Weed and Concentrates

As mentioned, storing weed and concentrates the right way may seem simple, but a lot of humanoids still don’t seem to do it. Pay attention to all of the above that I talked about, but also some other tips below to help guide you.

  • Seal everything at peak condition and potency immediately to maintain the highest quality. When consuming, seal everything after use.
  • Store your cannabis flower and concentrates away from high-traffic areas. Doors and windows that open and close often can lead to big temperature swings capable of affecting your goodies.
  • Always use dark-tinted glass containers when possible, and always avoid plastic bags. Plastic can sometimes have a static charge capable of pulling trichomes off.
  • Label every single jar with its strain name, type of product, and date.
  • Once labeled, rotate newer flower and concentrates to the back, and be sure to use the older stuff first.

Trust the Science When It Comes to Proper Storage

Researchers continue to study and publish findings on cannabis preservation, helping us humanoids (and aliens) better understand how to fight the effects of time, light, air, and heat on THC, terpenes, and overall product integrity.

More studies are on the way, but what we know now is enough to make a huge difference. If you’re serious about protecting your harvest from premium cannabis seeds, don’t overlook this final but vital stage.

CBN may not be your friend, but it’s gonna show up to the party anyway—minimize its takeover and preserve your weed’s full potential by storing it properly.

Want to Maximize Your Grow and Preserve It the Right Way?

Start strong by choosing high-quality seeds! Visit Multiverse Beans to buy cannabis seeds online—autoflowers, photoperiods, hybrids, indicas, and sativas. Once you grow them right, store them right using the tips above.

👉 Ready to grow and preserve like a pro? Shop now at Multiverse Beans

References

  1. Harvey, D. J. (1990). Stability of cannabinoids in dried samples of cannabis dating from around 1896–1905. Journal of Ethnopharmacology, 28(1), 117–128. https://doi.org/10.1016/0378-8741(90)90018-Z
  2. Bueno, J., Leuer, E., Kearney, M., Jr, Green, E. H., & Greenbaum, E. A. (2020). The preservation and augmentation of volatile terpenes in cannabis inflorescence. Journal of Cannabis Research, 2(1), 27. https://doi.org/10.1186/s42238-020-00035-z
  3. Trofin, I. G., Dabija, G., Văireanu, D.-I., & Filipescu, L. (2012). The influence of long-term storage conditions on the stability of cannabinoids derived from cannabis resin. Revista de Chimie, 63(4), https://bch.ro/pdfRC/TROFIN%20I%204%2012.pdf
  4. Lerner, P. (1969). The precise determination of tetrahydrocannabinol in marihuana and hashish. United Nations Office on Drugs and Crime Bulletin on Narcotics, 21(1), 39–42. Retrieved from https://www.unodc.org/unodc/en/data-and-analysis/bulletin/bulletin_1969-01-01_1_page004.html
  5. Coffman, C. B., & Gentner, W. A. (1974). Cannabis sativa L.: Effect of drying time and temperature on cannabinoid profile of stored leaf tissue. Bulletin on Narcotics, 26(1), 68–70.
  6. Fairbairn, J. W., Liebmann, J. A., & Rowan, M. G. (1976). The stability of cannabis and its preparations on storage. The Journal of Pharmacy and Pharmacology, 28(1), 1–7. https://doi.org/10.1111/j.2042-7158.1976.tb04014.x

Growing cannabis seeds with companion p

lants—both indoor and outdoor—can make a galaxy of a difference when dealing with pest control in cannabis gardens. Sometimes, no matter what a home grower does, they can never seem to dial in the organic pest control aspect of growing cannabis plants, resulting in less-than-stellar results.

Humanoid home growers and interdimensional aliens like me have one thing in common—we both have green thumbs! Combine some know-how with those green thumbs to make companion plants for cannabis dramatically revolutionize your indoor grow, greenhouse cannabis garden, or outdoor living soil bed.

Why Use Companion Plants With Your Cannabis Seeds?

Home cannabis growers should utilize companion plants for cannabis pest control to confront pest issues organically and efficiently. This time-tested growing trick has numerous advantages that result in an enhanced ecosystem that minimizes mold, maximizes soil quality and health (nitrogen), promotes pollination, and—as discussed here—keeps those annoying cannabis garden pests away! [1][2]

When it comes to cannabis and companion planting, humanoid researchers have slacked hard in the areas of studies and research. Hard, factual evidence is mostly observational and has been passed down from early ancestors, along with their successes using companion plants for other traditional crops.

Though there are many proven varieties to pair with your cannabis seeds, it still requires some trial and error to get them to interact and produce just the way you want.

Terpene Interaction & Enhancement

Terpenes are a natural way for many plant species to fight pests in cannabis grows [3]. They can also be X factors because many companion plants have their own terpene profiles which can also affect the terps, aroma, and flavor of your final cannabis yield.

For example, be aware that cultivating companion plants like onion and garlic in the same cannabis grow bed with your OG Kush may help keep away pests; however, it just might also turn your prized OG Kush into something more like Onion Garlic Kush! I’ll be sure to mention which ones have been shown to affect the terpenes of cohabiting cannabis plants when possible.

When Should I Use Companion Plants?

Companion planting with cannabis can be used indoors, outdoors, or in a big, beautiful greenhouse cannabis grow. As mentioned, if you want the most organic and efficient way to fight common cannabis pests, then get a few new green friends growing close to your weed. A good rule of thumb (green or otherwise) is to start your companions once the cannabis seedling develops its first true leaves. That way the fresh cannabis seedling doesn’t have to compete for nutrients.

Indoor Companion Plants

Along with thinking about how much space you have to grow at your disposal, using companion plants for indoor cannabis grows must also consider other environmental concerns. Before we discuss which to use, here are a few tips:

  • Use small pots—this will help keep your companions contained in a certain area to maximize precious indoor grow space
  • Vertical space is the place, especially with an indoor cannabis garden. Think about any ways in which you can use hanging planters or a vertical stacking system to best take advantage
  • Pay careful attention to airflow and humidity levels, so that your new friends don’t add to it dramatically. If not, you’re going to be battling mold spores non-stop!

Basil

A strong-scented herb that repels aphids, beetles, thrips, houseflies, and spider mites. Also boosts limonene and pinene-heavy strains.

  • Keep 12″ from cannabis
  • Likes acidic soil and good drainage
  • Ready in ~3 weeks

Lavender

Repels moths, fleas, and whiteflies; attracts pollinators outdoors. Excellent for enhancing linalool-rich cannabis strains.

  • Needs full light and compost-rich soil
  • Maintain ~1 foot distance
  • Seedlings in ~3 weeks

Peppermint & Spearmint

Menthol-heavy herbs that repel ants, aphids, and beetles. Grow in separate containers to contain spread.

  • Germinate in ~2 weeks
  • Enhance certain Kush and GSC crosses

Rosemary

Repels spider mites, aphids, and mold. Enhances caryophyllene or pinene profiles.

  • Keep 1–2 feet away
  • Likes dry soil and full sun

Greenhouse & Outdoor Companion Plants

Many of the varieties already mentioned above are great for indoor companion planting, and as a bonus, also work well in a greenhouse cannabis grow or outdoor cannabis garden. Just be sure to account for differences in temperature, humidity, available light, and even the size of the pests (deer and rabbits).

Greenhouse Companion Planting Tips

Growing cannabis in a greenhouse provides the best of both worlds—indoor and outdoor cannabis cultivation—all in one! Take advantage of the improved space and flexibility that a greenhouse grow provides courtesy of several tips:

  • Varieties like peppermint spread like wildfire, so use raised beds or soil containers to keep them under control
  • Create a protective barrier in your greenhouse cannabis garden with a perimeter of pest-repelling companion plants
  • Beneficial insects like ladybugs can be introduced to add an alternate dimension of cannabis pest control
  • Keep tall companions that create a lot of shade such as sunflowers and dill toward the back of the grow area and out of the light radius of your cannabis plants
  • As always, be sure to keep humidity levels under control when adding more of anything to your grow area

Outdoor Companion Planting Tips

When cultivating cannabis outdoors, you are, of course, exposed to environmental factors, and therefore trying to maintain a solid balance to your ecosystem in response. Here are some additional tips for any of my humanoid growmies looking to do so:

  • Marigolds, basil, and lavender do wonders as a protective perimeter for outdoor cannabis grows
  • Protect your cannabis plants from strong winds by planting tall companion plants like sunflowers or corn
  • Keep trap crops about 10 feet away from your cannabis garden to ensure those pesky critters find the trap first and not the main attraction
  • Flowering herbs for cannabis companion planting like yarrow, dill, and cilantro will attract beneficial insects like ladybugs and pollinators. Intersect them about a foot or so away from your cannabis plants

Best Outdoor Companion Plants For Cannabis

Marigolds

Repels aphids, nematodes, whiteflies, and rabbits.

  • Partial sun, good drainage

Onion, Garlic & Chives

Repels root nematodes and spider mites.

  • Use caution—strong terpenes can influence cannabis flavor

Lemon Balm

Repels mosquitoes, attracts pollinators, and boosts limonene strains.

  • Keep in pots to prevent overgrowth

Sunflowers

Act as aphid magnets and wind barriers.

  • Sow in moist, well-draining soil
  • Blooms in 2–3 months

Dill

Repels caterpillars and attracts parasitic wasps.

  • Plant directly in soil, full sun

Yarrow

Attracts ladybugs and repels aphids.

  • Plant right next to cannabis

Cilantro

Repels spider mites and beetles; boosts terpene profiles.

  • Germinates in 2–3 weeks

Peppers

Hot peppers deter pests with capsaicin and even repel deer.

  • Great for outdoor or greenhouse grows
  • Space 1–2 feet from cannabis

What Companion Plants Should I Use To Grow With Cannabis?

Choosing which companion plants for cannabis cultivation doesn’t have to be a long, drawn-out decision. Many perform the same functions while ridding your cannabis grow area of pests. However, some may work better in your particular environment—it’s just a matter of trial and error.

Consider growing a companion plant that supports terpene production, or that you can use after harvest as well. Herbs and plants like basil, lavender, rosemary, mint, peppers, onions, and garlic can be repurposed for food, topicals, or even herbal teas and tinctures. You may also want to choose companion plants based on how they can affect the final aroma and flavor of your cannabis strains. No matter what you choose, give yourself—and your faithful cannabis plants—a new friend that you can rely on!

Need seeds to start your companion planting journey? Explore premium cannabis genetics at Multiverse Beans and build the ultimate grow setup today. Contact us to learn more.

References

  1. Githinji, L. (2017). Companion planting in gardening (Sustainable and Urban Agriculture Series Fact Sheet 08-17). Virginia Cooperative Extension. Retrieved from: https://static1.squarespace.com/static/56bb6533c2ea51c6431244f6/t/5995a653f14aa147e173a5dd/1502979667522/Companion+planting+Revised.pdf
  2. Schalau, J. (2011, January 26). Is companion planting scientific? University of Arizona Cooperative Extension, Yavapai County. Retrieved from: https://cales.arizona.edu/yavapai/anr/hort/byg/archive/companionplanting.html
  3. Boncan, D. A. T., Tsang, S. S. K., Li, C., Lee, I. H. T., Lam, H. M., Chan, T. F., & Hui, J. H. L. (2020). Terpenes and terpenoids in plants: Interactions with environment and insects. International Journal of Molecular Sciences, 21(19), 7382. https://doi.org/10.3390/ijms21197382
  4. Bhatwalkar, S. B., Mondal, R., Krishna, S. B. N., Adam, J. K., Govender, P., & Anupam, R. (2021). Antibacterial properties of organosulfur compounds of garlic (Allium sativum). Frontiers in Microbiology, 12, 613077. https://doi.org/10.3389/fmicb.2021.613077

It’s me, Greg the Alien, once again, and let me start by saying, “Congrats,” you’ve officially grown a successful harvest of potent, premium weed—now learn how to trim cannabis buds like a pro! For some folks, trimming cannabis buds can be a real pain in the you-know-what. However, with the right tools, knowledge, and plan of action, trimming can be just as enjoyable as any other stage in the cultivation process.

Whether you grew photoperiods or autoflowers, this is the part where your buds go from “garden fresh” to dispensary-quality nugs.

Why is Trimming Cannabis So Important?

Your weed plant made it through the trials and tribulations of cultivation generally unscathed. Finish the process with a clean, more aesthetically pleasing appearance that also helps to preserve vital cannabinoids and terpenes. Trimming away excess plant material also leads to a smoother smoke containing far less chlorophyll, while also preventing mold production. [1]

Flushing & When to Trim Cannabis Plants

Flushing your weed plants free of nutrients and replenishing with water is an option some growers like to utilize about 2 weeks before they chop them down. Though not a requirement, doing so removes any remaining harshness of nutrient uptake still within the tissues of the buds–the result, according to some, is increased aroma and flavor. [2]

However, there remains a trade-off between enhancing desirable traits like aroma and flavor by flushing, while also potentially allowing nutrient deficiencies and cell damage by doing so. [2]

Whether or not you’ve flushed or not, eyeing up the trichome ripeness and looking for that ideal mix of cloudy white trichome heads is when it’s time to chop your plant down. Being patient is super important at this stage to judge the right time to harvest. 

Accuracy is also important, so as Uncle Paulie and I have mentioned before, ditch the jeweler’s loupe and get a digital microscope to determine when the right time to harvest is going to be. You want your weed plants to be at maximum potency before any manicuring starts, and digital microscopes give you the best chance at doing so. 

The Right Tools to Trim Cannabis

A big part of making trimming easier, less time-consuming, and less stressful is being prepared with the right tools for the job. Take a look below to see which tools I incorporate into my routine.

  • Trimming scissors: Perhaps the single most important tool for trimming is the trimming scissors themselves. A sharp, spring-loaded pair designed specifically for more detailed trimming and manicuring of each bud to greatness is a must.
  • Trim bin or tray: Designed as an optimal, portable workstation dedicated to the manicuring of cannabis, trim bins help to provide stability, support, and organization right on your lap. Most of these bins are also fitted with a separate section containing a micron screen to filter and retain kief from the massive amount of plant material being hand processed.
  • Nitrile gloves: A proper grip is needed when working with so much sticky, resinous plant material. Nitrile gloves make it easy to handle sticky buds and tools while also maintaining optimal cleanliness.
  • Rubbing alcohol: No other substance can quickly clean and disinfect your scissors like rubbing alcohol. Routinely remove excess resin with a towel and rubbing alcohol solution to make life much easier.
  • Storage jars: Keep your prized buds organized and ready for curing once trimmed, in a set of clean and resealable mason jars. Curing involves loosely sealing your trimmed buds in jars and venting them often to eliminate any remaining moisture. It’s also the final step before finally consuming your harvest–set it in motion the right way with airproof and sealable storage jars. 

Whether you’re trimming autoflower cannabis, photoperiods, or boutique craft strains, these tools are essential for high-quality, professional results.

Wet Trimming vs. Dry Trimming

There are two schools of practice when it comes to trimming your weed plants down after harvest. Wet trimming and dry trimming are exactly what they sound like, however, the results can be a little different. [3]

One recent study evaluated both methods to determine which yielded the most optimal cannabinoid and terpene content. Their results determined that mild wet trimming produced the highest concentration of cannabinoids due to an increased balance of stress signals. This process included only partial removal of the sugar leaves up front. [4]

On the other hand, complete removal of the sugar leaves in a dry trim could have the opposite effect. There is an effect from the remaining starches in the sugar leaves on secondary cannabinoids and terpenes. Dry trims are also apparently more efficient in enhancing terpenes. [4]

Wet trimming 

For the most part, wet trimming removes sugar leaves immediately after you chop down your weed plants. This process involves drying the buds after trimming them to remove the excess plant material, meaning a lot of stickiness to work through up front. 

Wet trimming is great at preventing any mold for growers living in very humid regions. Removing sugar leaves before drying also helps to cut down on drying time at the end. Buds maintained with a wet trim are often less compact than the typical nuggets we all desire. 

According to some researchers, wet trimming preserves trichomes more optimally since fresh trichomes are less susceptible to breakage compared to dried trichomes. [5]

  1. Grab each branch and cut it down closest to the nodal area while keeping the buds still attached to it. Continue this process to remove the excess branch material and set the trimmed branches and attached buds aside.
  2. Gather your tools and prepare your workstation.
  3. Grab each branch from your pile and begin to trim away the sugar leaves on the buds. Begin trimming at the base of the buds and then around in a circle to maintain a classic cone shape of the bud. Remove many of the sugar leaves, but as the studies show, keep some intact to dry with the buds later on to synthesize vital starches. 
  4. Now that your buds are trimmed to perfection, place the bud-laden branches on the drying rack in a room with good ventilation for several days to remove the excess water content. Shoot for 50-55% humidity. Once dry, remove buds from the branches and place them in resealable mason jars to begin curing. 
  5. Set all of your trimmed biomass aside in a separate pile or bin. It’ll be useful to create a wide variety of products like oils, edibles, concentrates, and others.

Dry Trimming

Dry trimming is when growers dry the branches first before manicuring each bud. This process makes drying take longer, but with more optimal results in the areas of flavor and aroma. Sugar leaves also start to lose moisture more quickly with dry trimming, making them slightly more difficult to trim. 

  1. A dry trim starts at the base of your weed plant. Make a chop at the base of the entire plant to remove it from its roots. Take the freshly chopped plant and hang it upside down in a room-temperature environment with plenty of ventilation and a fan. 50-55% RH is ideal. 
  2. After several days, the moisture content should be removed. Chop and remove each branch from the plant base and set them aside to begin individually manicuring.
  3. Grab your tools and start manicuring each bud off the branches one at a time. Use the same method as wet trimming to manicure and detail your buds. Start at the base of each bud and go around in a circle, trying to maintain the tight, symmetrical, and conical shape of the typical dried cannabis bud while removing the sugar leaves to your best ability. The sugar leaves have had time to synthesize during the drying process.
  4. Toss the dried buds into a resealable mason jar to begin the curing process.
  5. Save all of your essential trim material and kief, they can be used to make edibles, concentrates, and much more!

Escape from the Trim Jail Mentality

Many home growers I know refer to the overwhelming presence of freshly chopped plant matter to sort and manicure as “trim jail.” Listen, I have been to jail for one night in the Bear Paw Galaxy—over there by the Lynx constellation and the new Starbucks that just opened—for going Warp 3 in a Warp 2 Zone—and let me tell you, it ain’t nothin like trimming weed!

Hang out with friends, blaze, listen to good music, and make dank buds look pretty! Make trimming fun by creating a comfortable environment free of stress or distraction. Inviting some friends over to help minimizes the amount of time in your trim jail sentence.

Remember to keep a consistent size and shape—don’t butcher your buds—and maintain clean, sharp tools, and you’ll be in trim heaven, not trim jail!

Whether you’re trimming your first cannabis grow or your fiftieth, make it a ritual. Respect the plant, and the process becomes a celebration.

Contact Multiverse

Need help before, during, or after your harvest? Reach out to the team at Multiverse Beans for growing support, harvesting tips, and of course—your next round of premium cannabis seeds.

Buy cannabis seeds online at Multiverse Beans and grow something worth trimming.

References

 

  1. Al Ubeed, H. M. S., Wills, R. B., & Chandrapala, J. (2022). Post-harvest operations to generate high-quality medicinal Cannabis products: A systemic review. Molecules, 27(5), 1719. https://doi.org/10.3390/molecules27051719
  2. Llewellyn, D., Golem, S., Jones, A. M. P., & Zheng, Y. (2023). Foliar symptomology, nutrient content, yield, and secondary metabolite variability of cannabis grown hydroponically with different single-element nutrient deficiencies. Plants (Basel, Switzerland), 12(3), 422. https://doi.org/10.3390/plants12030422
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