Jack Herer: The Complete Guide
Jack Herer is arguably the most famous sativa-dominant hybrid of the 1990s and a political monument: named after the American cannabis activist and author of «The Emperor Wears No Clothes», it blends Haze clarity with Northern Lights stability. With 18–24% THC, a terpinolene-led terpene profile, and a clear, energizing effect, Jack Herer remains the reference for productive, daytime cannabis use.
Jack Herer is a sativa-dominant hybrid (≈55/45) with 18–24% THC and a terpene profile dominated by terpinolene. Genetics: Haze × Northern Lights #5 × Shiva Skunk. Aroma: lemon, pepper, pine, earthy Haze notes. Effects: clear, euphoric, energizing — ideal for creative work and social situations. Medically popular for depression, fatigue, ADHD-like symptoms, and daytime chronic pain. In Switzerland, the THC version is only available on medical prescription.
What you'll find on this page
History & namesake · Genetics & lineage · THC & cannabinoid profile · Terpenes & aroma · Effects & experience · Medical use · Cultivation notes · Comparison with similar strains · Jack Herer in Switzerland · FAQ.
History: the activist and the strain
Jack Herer was developed in the 1990s by Sensi Seeds in the Netherlands and named after American cannabis activist Jack Herer, who passed away in 1995. Herer was one of the most influential figures in the US hemp movement; his book «The Emperor Wears No Clothes» has been published in multiple editions worldwide. The naming by Sensi Seeds honored his work for decriminalization and the economic use of hemp.
The breeding goal was to combine the best qualities of a tropical sativa Haze with the robustness, flowering speed, and yield of modern indica hybrids. Sensi Seeds used Original Haze, Northern Lights #5, and Shiva Skunk as parent lines — a combination that turns sativa DNA into a reliable, cultivable commercial hybrid.
Genetics & lineage
Official genetics: Haze × Northern Lights #5 × Shiva Skunk. Sativa share ≈55%, indica ≈45% — but the effect is dominated by the Haze sativa. The Haze component delivers mental clarity, citrus-earthy notes, and a long, rising effect phase; Northern Lights #5 provides compact flowers, resin production, and a stable effect; Shiva Skunk adds a peppery-skunk aroma and a faster flowering onset.
Sensi Seeds described three main phenotypes: a more sativa-leaning pheno with longer flowers and Haze dominance, a balanced intermediate phenotype, and a more indica-leaning variant with shorter flowering and a heavier body impression. For the medical market, the balanced middle phenotype is most sought-after.
THC, CBD and cannabinoid profile
Average THC content: 18–24%. This places Jack Herer in the upper-mid range of modern hybrids — notably stronger than classic landraces, but usually less overwhelming than heavy indica hybrids like Gorilla Glue #4 or Girl Scout Cookies. CBD typically < 0.2%.
Secondary cannabinoids: CBG (0.3–0.6%), CBC (trace), and CBN (0.1–0.3%). CBG may contribute to the stimulating, focus-promoting effect; the low CBN content explains why Jack Herer rarely makes users sleepy. This profile makes it a popular daytime medication.
FAQ
Is Jack Herer sativa or indica?
Sativa-dominant (≈55% sativa, 45% indica). The effect is dominated by the clear, energizing Haze sativa, however.
How much THC does Jack Herer have?
Typically 18–24% THC. It is stronger than classic landraces but usually less overwhelming than very heavy indica hybrids like GG4.
Which terpene dominates in Jack Herer?
Terpinolene — responsible for the lemony-peppery, fresh character. Supported by pinene, caryophyllene, and limonene.
How long does Jack Herer last?
Inhaled: onset 2–5 min, peak 20–40 min, main effect 2–3 h. The comedown is generally clear and non-sedative.
What is Jack Herer used for medically?
Often used for depression, fatigue, ADHD-like concentration issues, migraine, and daytime neuropathic pain. Less suited for sleep problems.
What is the genetics of Jack Herer?
Haze × Northern Lights #5 × Shiva Skunk. This mix delivers Haze clarity with indica robustness.
Is Jack Herer beginner-friendly?
Yes, at low doses. The effect is clearer and less sedating than indicas. High THC levels still require respect.
Is Jack Herer legal in Switzerland?
The THC version (>1% THC) is only available on medical prescription. CBD-dominant variants under 1% THC are legally available.