# Jack Herer

> Jack Herer is a cannabis strain Sensi Seeds created in the Netherlands in the mid-1990s; Leafly describes its parentage as a Haze hybrid with a Northern Lights #5 × Shiva Skunk cross, while Weedmaps says Sensi has not published an exact recipe. It tests at a median total THC of 19.59% across 910 state lab tests of Jack Herer flower, with the middle half of results between 17.13% and 22.00%; the leading individual-terpene medians are terpinolene 0.51%, β-caryophyllene 0.29%, α-humulene 0.11%.

Published by Official Cannabis (https://officialcannabis.net). Lab statistics: 910 state lab tests, median total THC 19.59%, middle half 17.13%–22.00% (Cannlytics cannabis_results, CC BY 4.0, analysis by Official Cannabis).

## Guide
- [Strain overview](https://officialjackherer.com/): Jack Herer is Sensi Seeds’ Haze, Northern Lights #5 and Shiva Skunk hybrid. Median THC across 910 state lab tests: 19.59%. Genetics, terpenes and history.
- [Genetics](https://officialjackherer.com/genetics/): Jack Herer’s published lineage is Haze × (Northern Lights #5 × Shiva Skunk), but Sensi Seeds has not published an exact recipe. Family tree and phenotype notes.
- [THC and terpenes](https://officialjackherer.com/potency/): Jack Herer flower had 19.59% median THC across 910 matched state lab tests. See the middle range, CBD, terpene results and published figures.
- [Lab report](https://officialjackherer.com/lab-report/): Jack Herer lab report: 46% of flower tests hit 20% THC; terpinolene led 75% of terpene tests.
- [Effects](https://officialjackherer.com/effects/): Leafly users most often report focused, energetic and creative effects for Jack Herer. Weedmaps reports uplifted, happy and relaxed. No medical claims.
- [Growing](https://officialjackherer.com/grow/): Compare published Jack Herer flowering and growth specifications from Sensi Seeds, Leafly and Weedmaps. Informational only; no seed sales or legal advice.
- [Where to find it](https://officialjackherer.com/near-me/): Jack Herer availability, strict name matching and state-lab coverage. Market details appear only when a Weedmaps snapshot is loaded.
- [History](https://officialjackherer.com/history/): A sourced Jack Herer timeline: the activist and author, Sensi Seeds’ mid-1990s strain, and documented Cannabis Cup and Highlife Cup results.
- [FAQ](https://officialjackherer.com/faq/): Sourced answers about Jack Herer’s type, genetics, THC, terpenes, flowering, effects, namesake and relationship to Critical Jack.

## Lab report: key findings
- Jack Herer's terpene tests had terpinolene in front 75% of the time; β-caryophyllene was a distant runner-up at 19%.
- Jack Herer cleared 20% total THC in 46% of flower tests, but 25% in only 5.4% and 30% in 0.4%.
- 2023's median THC was +4.32 points above 2018's, with 16.54% at the start and 20.86% at the end.
- Across qualifying labs, the low median was 17.70% (Lab C) and the high was 24.00% (Lab F), separated by 6.30 points.
- By median THC, Jack Herer sat in the bottom third at 40th of 58, with 19.59% as its median.
- Menu availability was top-third: Jack Herer ranked 7th of 58 tracked strains, with 486 store listings carrying flower in 22 markets.
Full analysis, tables and method: https://officialjackherer.com/lab-report/

## Comparisons
- [Jack Herer vs Critical Jack](https://officialjackherer.com/vs/critical-jack/): Critical Jack is a Critical+ × Jack Herer hybrid. Compare the documented parent relationship, reported descriptors and state-lab THC summaries.
- [Jack Herer vs Super Lemon Haze](https://officialjackherer.com/vs/super-lemon-haze/): Compare Jack Herer and Super Lemon Haze through their published family descriptions, reported flavor terms and matched lab results.
- [Jack Herer vs Northern Lights](https://officialjackherer.com/vs/northern-lights/): Compare Jack Herer with Northern Lights through the published Northern Lights #5 component, current descriptions and lab results.
- [Jack Herer vs Blue Dream](https://officialjackherer.com/vs/blue-dream/): Compare two Haze-associated hybrids using each source’s lineage listing and the site’s matched state-lab summaries.
- [Jack Herer vs Durban Poison](https://officialjackherer.com/vs/durban-poison/): Compare Jack Herer and Durban Poison with attributed sativa labels, terpene descriptions and matched lab summaries.
- [Jack Herer vs Sour Diesel](https://officialjackherer.com/vs/sour-diesel/): Compare Jack Herer and Sour Diesel through published parentage, flavor terms, user reports and matched lab results.

## Data
- [Lab test CSV](https://officialjackherer.com/data/jack-herer-lab-tests.csv): one row per test (state, date, lab, product, THC, CBD, terpenes)
- [Full text for LLMs](https://officialjackherer.com/llms-full.txt)