Twenty20 – Autowreck F4 Strain – Auto Fem

  • Lineage/Origins: Trainwreck, X-Factor
  • Type (Indica/Sativa): Sativa Autoflower
  • Filial Generation:  F4
  • PVI (Phenotypic Variation Index): low
  • First sign of flower in days:   25-30 days from sprout
  • Total life cycle in days:   80-95 days
  • Height:   tall
  • Yield Index (per sf): above average
  • Color: green
  • Aroma/Nose: Pine needles, skunk, cat piss, lemon, lime, pepper
  • Effects: great cerebral and uplifting effects expected from a sativa, and extreme potency expected from Trainwreck
  • Notes: This was a project we started several years ago as an attempt at creating an autoflower version of the classic TW Arcata cut. We used X-Factor as the donor to incorporate the autoflower gene and the project turned out to be a phenomenal success. This is a near perfect replica of the original Trainwreck that we have been growing for over two decades. She grows fast and can get quite tall but holds herself up much better than the photoperiod version.

Additional Information

Pack Size

3 Pack, 6 Pack

Plant Type


Seed Type

Auto Fem




(Disclaimer: When growing cannabis there is something called phenotypical expressions. This means a strain can express itself (look differently) from plant to plant. Our breeder photos show one of potentially many phenotypical expressions)



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