Genetics
HomeStrains › Double Jack
Sativa dominant retail shopping label — not genetics

Double Jack Strain

Double Jack is a sativa dominant strain (CSL Ruderalis × Jack Herer). ~20.0% THC; 67-day flowering.

Median THC
20.0%
Flowering
67 days
Breeder releases
1
Avg rating

Chemotype genetics-true

THC
20.0%
CBD
0.81%
Chemotype
Type I
THC-dominant

Chemotype — the cannabinoid and terpene profile — is the lab-verifiable signal that stays true to a cultivar’s genetics, which is why scientists classify cannabis by chemical profile (a “chemovar”) rather than by name (Hazekamp & Fischedick 2012). Cannabinoid type is set largely by a single gene (the THC:CBD ratio); about 96% of commercial flower is Type I, THC-dominant. Terpene profiles are sourced from Certificates of Analysis (COA) and roll out as Areto’s lab-verified data comes online.

Indica / Sativa — retail shopping guide

Indica 30%Sativa 70%

Indica, sativa and hybrid are a retail shopping convention — not a reliable guide to genetics or effects. When researchers analysed 89,923 commercial samples across six states, these labels did not predict a plant’s terpene or cannabinoid profile, and a genome-wide study found sativa- and indica-labelled plants to be genetically indistinct (PLOS ONE 2022; Nature Plants 2021). The labels are so fluid that AK-47, a hybrid, won “Best Sativa” at the 1999 Cannabis Cup and “Best Indica” four years later. For an accurate, genetics-true picture, see the chemotype above.

Genetics & Lineage

Parents
This strainDouble Jack
Descendants (3)
ChildDouble Jack AutoChildCSL RuderalisChildHybrid Map of Double Jack

Breeder releases (1)

BreederTHCFloweringSeedsRating
Canadian Seed Lab20.0%67dregular

About Double Jack

A multiple winner of the Cannabis Cup, undoubtedly one of the most popular strains of marijuana in the world named in honor of the late Jack Herer, the world-famous activist for the legalization of cannabis. We checked the genetic work on creating a strain of initial varieties, obtained after crossing with a specially selected clone of Jack Herer. Many years of breeding work is the secret weapon of every grower.Juicy, shiny and sticky buds with a fresh scent and an odor of deep fruity notes. Double Jack has an excellent taste. The effect occurs immediately, a strong high taking you beyond the boundaries of consciousness. Indica/Sativa: 40/60 Genetics: (Haze x (NL #5 x Shiva Skunk)) X Jack Herer Weight: 600 gr/m² Flower-time: 9-10 weeks THC: 20% CBD: 0.81%

Frequently asked questions

What are the genetics of Double Jack?
Double Jack comes from CSL Ruderalis × Jack Herer.
Is Double Jack indica or sativa?
Double Jack is classified as sativa dominant.
How much THC does Double Jack have?
Across breeder releases, Double Jack tests around 20.0% THC.
How long does Double Jack take to flower?
Double Jack flowers in about 67 days.
Is Double Jack available as feminized or autoflowering seeds?
Double Jack is offered as: regular.