Brothers Grimm Seeds
Rosetta 78 XX
What our 100% guarantee means
Every Rosetta 78 XX seed is guaranteed to germinate. If any seed in your pack doesn't pop, we replace it free — no hassle, no extra cost. 
$25.00
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100% germination guarantee — we make it right.
99% of orders ship in 1–2 business days.
Discreet, stealth packaging on every order.
Germination Guarantee
If a seed doesn't pop, we replace it — no hassle, no extra cost.
Free Seed Rewards $84 away from 18 free seeds
Spend $120 to unlock 18 free seeds ($270 value) + free shipping.
About this strain
Grow Rosetta 78 (Genius x Rosetta Stone) feminized seeds created by cannabis breeder Rick Campanella today.
To make Rosetta 78, Rosetta Stone, our female pollen donor, was crossed to Genius.
Rosetta 78 is a new photoperiod feminized tester seed option that begs to hunted.
To make Rosetta 78, Rosetta Stone, our female pollen donor, was crossed to Genius.
Rosetta 78 is a new photoperiod feminized tester seed option that begs to hunted.
Rosetta 78 seeds are still in tester phase, which explains their low price of $25 for 9 feminized seeds.
Grower's spec sheet
Genetics & Grow Data
Packsize9 Pack
Flowering TypePhotoperiod
BreedHybrid
Plant GenderFeminized
Empty fields show a fill-in placeholder until you add the data per strain. Yields vary with grower experience, medium, environment, and nutrients.
What growers say
5.0
★★★★★
42 reviews
Pairs well with
Common Questions
Seeds are sold as adult novelty and collectible items. It's your responsibility to know and follow the laws in your area before germinating.
Spend $120 to unlock 18 free seeds ($270 value) plus free shipping. Eligible freebies are added automatically at checkout — no code needed.
Our 100% germination guarantee has you covered. Reach out with your order number and we'll replace any seed that doesn't pop.
99% of orders ship within 1–2 business days from Nevada in discreet, crush-proof packaging with no external branding.
Blueberry Muffin grows uniformly and forgivingly, which makes it a confident pick for newer growers. Difficulty details appear in the spec sheet once added.
Rosetta 78 XX
$25.00