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Jack Herer
by Sensi Seeds · Jack Herer
About
Jack Herer is one of the most documented strains in modern cannabis history. Released by Sensi Seeds in 1994 after several years of stabilization work by founder Ben Dronkers, it was launched during a ceremony at what Sensi called the Cannabis Castle and won the 7th High Times Cannabis Cup the same year. Over the three decades since, the strain has collected something like 17 Cannabis Cup placements, which is unusual even by legendary-strain standards. The strain's namesake, Jack Herer, was a long-time cannabis activist and author of "The Emperor Wears No Clothes." Dronkers wanted the cultivar to honor Herer's advocacy, which is why the strain carries his name rather than a description of its effects or its lineage. Speaking of lineage, Ben Dronkers never publicly disclosed the exact genetics, though the commonly cited combination is Skunk #1 crossed with Northern Lights #5 crossed with Haze. Our database lists the lineage simply as "Jack Herer", which is less a fact and more an admission that the real pedigree lives inside Sensi Seeds' archives and not in the public record. The terpene data is where Jack Herer gets genuinely interesting. Terpinolene leads at 2.21%, which is one of the highest single-terpene concentrations in our entire database. Most terpinolene-dominant strains come in between 0.6 and 1.2 percent for the dominant terpene, so Jack Herer at over two percent is an outlier. Caryophyllene follows at 0.97%, also high. Those two terpenes together add up to more than 3 percent of the flower by weight, which is notable. The chemotype classification is "Orange (Terpinolene-dominant)", consistent with the Haze heritage in the lineage. THC ranges between 15.7 and 21.3% across the lab samples in our database, moderate by 2026 hybrid standards. Reviewers describe the effects as focused, euphoric, and energetic, which matches the daytime-functional reputation Jack Herer has maintained since its release.
Why does Jack Herer feel uplifting?
Jack Herer's effects are driven by its dominant terpinolene (2.21%), associated with a mildly sedative yet uplifting experience, combined with caryophyllene (0.97%), one of the few terpenes that binds directly to CB2 cannabinoid receptors.
Strain Profile
May Help With
Caryophyllene has strong anti-inflammatory properties
Caryophyllene binds to CB2 receptors for pain relief
Linalool has calming, stress-relieving properties
Linalool's sedative properties may aid sleep
Based on terpene research and reported effects. Not medical advice. Consult a healthcare professional for medical decisions.
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Quick Info
- Type
- hybrid
- Breeder
- Sensi Seeds
- Genetics
- Jack Herer
- THC
- 15.7–21.3%
- Chemotype
- Terpinolene-dominant
What is Terpinolene?
Herbal, floral terpene found in nutmeg, tea tree, and lilacs.
Learn more →
← Back to all strainsAbout Jack Herer
- Jack Herer is a hybrid cannabis strain. Hybrids combine characteristics of both indica and sativa genetics.
- Jack Herer typically tests at 15.7% to 21.3% THC.
- Users commonly report feeling focused, euphoric, energetic, relaxed when consuming Jack Herer. Individual experiences vary based on tolerance, dose, and consumption method.
- The dominant terpenes in Jack Herer are Terpinolene, Caryophyllene, Myrcene. Terpenes influence the aroma, flavor, and effects of a cannabis strain.
- Jack Herer is a cross of Jack Herer. It was bred by Sensi Seeds.