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The Official Cannabis collection · sheet 18No 18 · Jack HererFAQ

FAQ

Jack Herer FAQ

These concise answers separate published strain descriptions, user reports, state-lab evidence and facts about the person Jack Herer.1,2,3

What strain is Jack Herer?

A Sensi Seeds strain created in the Netherlands in the mid-1990s according to Leafly. Leafly describes it as sativa and gives a Haze hybrid with a Northern Lights #5 × Shiva Skunk cross; Sensi labels its regular line 50% sativa / 50% indica.1,4

Is Jack Herer indica or sativa?

Leafly files it as sativa, while Sensi Seeds calls its regular line 50% sativa / 50% indica and AllBud calls it 80% sativa / 20% indica. The labels differ by source and line.1,4,5

What are Jack Herer’s parents?

Leafly and AllBud give Haze × (Northern Lights #5 × Shiva Skunk). Weedmaps says the three families are widely traced but Sensi has not publicly laid out an exact recipe.1,5,6

How much THC does Jack Herer have?

Matched flower records have 19.59% median total THC across 910 tests, with a 17.13%–22.00% middle half.2 Leafly displays 18%, AllBud lists 15–24%, and Weedmaps displays 21–26%.1,5,6

What does Jack Herer taste or smell like?

Leafly lists pine, woody and earthy. Weedmaps’ user report lists pine, earthy and spicy/herbal, while AllBud lists citrus, lemon, orange, sour and sweet.1,5,6

What effects do people report for Jack Herer?

Leafly users most often report focused, energetic and creative, while Weedmaps users report uplifted, happy and relaxed. These are attributed reports, not medical findings.1,6

What terpenes are reported for Jack Herer?

The matched data’s leading medians are terpinolene 0.51%, β-caryophyllene 0.29%, α-humulene 0.11% from 415 tests with individual-terpene values.2 Leafly names terpinolene, caryophyllene and pinene.1

How long does Jack Herer flower?

Leafly and Weedmaps list 50–70 days indoors, depending on phenotype. Sensi Seeds says its regular line averages 10–12 weeks until harvest, so published figures should be read as source and line specifications.1,4,6

Can you buy Jack Herer seeds?

This guide does not sell or ship seeds. Sensi Seeds publishes a regular Jack Herer seed line, while CRS explains that federal hemp definitions and effective dates are changing; state and local rules can differ.4,7

Who was Jack Herer?

Jack Herer was an American cannabis-rights activist and author of The Emperor Wears No Clothes, self-published in 1985 according to Wikipedia. The strain is named for him.1,3,4

What was Jack Herer’s cause of death?

Wikipedia reports that he died in Eugene, Oregon, on April 15, 2010, from complications related to a September 2009 heart attack.3

Is Critical Jack the same as Jack Herer?

No. Dinafem and Leafly identify Critical Jack as a hybrid of Critical+ and Jack Herer, which makes Jack Herer a parent in that published account.8,9

Sources

  1. Leafly, Jack Herer strain information. Accessed Oct 5, 2026.
  2. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 5, 2026.
  3. Wikipedia, Jack Herer. Accessed Oct 5, 2026.
  4. Sensi Seeds, Jack Herer regular seeds. Accessed Oct 5, 2026.
  5. AllBud, Jack Herer marijuana strain information and reviews. Accessed Oct 5, 2026.
  6. Weedmaps, Jack Herer strain page. Accessed Oct 5, 2026.
  7. Congressional Research Service, Changes to the statutory definition of hemp and implications for agricultural policy (IF13136) (2026-09-28). Accessed Oct 5, 2026.
  8. Dinafem Seeds, Critical Jack. Accessed Oct 5, 2026.
  9. Leafly, Critical Jack strain information. Accessed Oct 5, 2026.