
THC
18.7–21.1%
CBD
0.4%
Genetics Split
Viper is a tall, sativa-dominant hybrid rooted in Mexican landrace genetics, easy to grow with THC between 18.7% and 21.1%.
No effect, terpene, flavor or medical-use data specific to Viper has been published yet, so we don't guess. For what hybrid strains usually do, see the effects guide.
THC in this profile
21.1% THC
Growing Information
Flowering Time
8–9 weeks
Difficulty
easy
Height (Indoor)
Tall
About Viper
Viper traces back to Mexican landrace stock, and John Sinclair Seeds' version keeps that heritage front and center in a hybrid that runs 90 percent sativa against just 10 percent indica. That lineage shows in the plant's stature alone, growing tall indoors and demanding some headroom from anyone running it in a standard tent. THC lands between 18.7 and 21.1 percent, a solid range for a landrace-derived cultivar. Flowering wraps in eight to nine weeks, quick for a sativa-dominant plant of this height, and the easy grow rating means it does not punish beginners for taking it on. There is something appealing about growing a strain this directly connected to an old-world landrace rather than a long chain of modern hybrid crosses, and Viper delivers that connection without an unreasonable grow difficulty.
Where to Buy Seeds
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Bred from Viper
1 cross in our database list Viper as a parent.
Frequently Asked Questions about Viper
Is Viper an Indica, Sativa, or Hybrid?
Viper is classified as a hybrid cannabis strain bred from a genetic cross of Indica × Skunk.
What cannabinoid content is reported for Viper?
Viper: 21.1% THC and 0.4% CBD reported in our data. The THC figure, when present, is the upper end of the reported range, not a typical measured dose. Potency can vary across harvests, phenotypes, and growing conditions.
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