¶ Jack Herer
¶ Overview
Jack Herer is a sativa-dominant hybrid named in honor of the legendary cannabis activist and author of "The Emperor Wears No Clothes." The strain was created by Sensi Seeds in the Netherlands during the 1990s as a tribute to Herer's decades of advocacy for cannabis legalization and hemp industrialization. Jack Herer combines Haze genetics with Northern Lights #5 and Shiva Skunk, producing a strain that balances creative, uplifting cerebral effects with an earthy-pine-woody aroma. It is one of the most awarded cannabis strains in history and remains a benchmark for quality sativa-dominant hybrids.
¶ Quick Stats
| Attribute | Value |
|---|---|
| Type | Sativa-Dominant Hybrid |
| THC % | 18-24% |
| CBD % | <1% |
| Dominant Terpenes | Caryophyllene, Terpinolene, Pinene |
| Flowering Time | 50-60 days |
| Yield | Moderate (400-500 g/m² indoor) |
| Growing Difficulty | Moderate |
¶ Genetics & Lineage
Jack Herer's exact genetic composition has been described by Sensi Seeds as follows:
- Haze -- The classic sativa-dominant strain (believed to include Colombian, Mexican, Thai, and South Indian genetics) contributing cerebral, creative effects
- Northern Lights #5 -- A specific Northern Lights phenotype contributing indica structure and faster flowering
- Shiva Skunk -- A Northern Lights x Skunk cross, adding resin production and reliability
Parent lineage: Haze x (Northern Lights #5 x Shiva Skunk)
The result is a sativa-dominant hybrid (approximately 55% sativa / 45% indica) that captures the creative energy of Haze while being more manageable to grow than pure Haze varieties. Sensi Seeds has maintained and refined the Jack Herer genetics since its introduction, and the strain has been widely cloned and pheno-hunted by other breeders.
¶ Cannabinoid Profile
| Cannabinoid | Typical Range |
|---|---|
| THC (Total) | 18-24% |
| CBD | <1% (typically 0.1-0.3%) |
| CBG | 0.5-1.5% |
| CBN | <0.5% (increases with age) |
Jack Herer sits in the upper-moderate to high THC range, providing noticeable potency while maintaining the clear-headed, functional effect profile that defines the strain.
¶ Terpene Profile
| Terpene | Approximate Share | Notes |
|---|---|---|
| Caryophyllene | 25-40% | Primary terpene; spicy, peppery, woody character |
| Terpinolene | 15-25% | Floral, herbal, citrus notes contributing to the uplifting quality |
| Pinene | 10-20% | Significant presence; pine, fresh aroma |
| Myrcene | 5-10% | Lower than indica-dominant strains, consistent with the clear-headed effect |
| Ocimene | 2-5% | Subtle sweet, herbal accents |
The caryophyllene-terpinolene-pinene combination is distinctive and produces the earthy-pine-woody aroma that identifies Jack Herer.
¶ Effects & Experience
Jack Herer is widely reported to produce:
- Creativity and mental clarity -- Enhanced creative thinking and mental focus, making it popular among artists, writers, and professionals
- Uplifting euphoria -- A bright, cheerful mood lift that promotes positivity
- Energy and sociability -- Increased energy and social engagement, suitable for daytime and social settings
- Functional high -- The effects are pronounced but allow users to remain productive and engaged in tasks
Onset: Effects begin within minutes when smoked or vaporized; 30-90 minutes when consumed orally.
Duration: 2-4 hours for inhaled consumption; 4-8 hours for oral consumption.
Intensity: Moderate to strong. The effects are clear-headed and functional rather than overwhelming, making Jack Herer suitable for a wide range of users.
⚠️ Effects are self-reported and vary by individual, dose, tolerance, and consumption method. Not a prediction of any individual's experience.
¶ Aroma & Flavor
- Smell: Earthy, pine, and woody with spicy and herbal undertones. The caryophyllene-pinene combination gives it a fresh, forest-like quality that is distinctive and recognizable.
- Taste: Earthy and pine on the inhale, with woody and slightly spicy notes on the exhale. The flavor is clean and classic, appealing to users who appreciate traditional cannabis taste.
¶ Medical Usesdanger
Not Medical Advice -- The following lists commonly reported therapeutic applications. This does not constitute medical advice. Consult a healthcare professional before using cannabis therapeutically.
Commonly reported uses include:
- Depression and low mood -- The uplifting, creative effect is frequently cited for mood elevation
- Fatigue -- The energizing quality provides daytime functionality
- Stress and anxiety -- The clear-headed euphoria is reported to reduce stress without sedation
- Focus and mental clarity -- Some users report improved concentration for work or creative projects
- Migraines and headaches -- Commonly reported to provide relief without the fog associated with sedating strains
¶ Adverse Effects
Commonly reported adverse effects:
- Dry mouth
- Dry eyes
- Anxiety or racing thoughts at higher doses
- Increased heart rate
- Dizziness
- Difficulty sleeping if used late in the day
¶ Growing Information
| Attribute | Details |
|---|---|
| Difficulty | Moderate -- requires some experience but generally manageable |
| Flowering Time | 50-60 days (indoor) -- faster than many Haze-dominant strains |
| Yield | 400-500 g/m² indoor; 550+ g/plant outdoor |
| Plant Height | Medium to tall -- sativa stretch is moderate; training recommended |
| Preferred Environment | Indoor or outdoor; prefers warm, sunny conditions with good air circulation |
| Resistance | Good resistance to mold and pests. Responds well to SOG, SCROG, and topping. The Northern Lights heritage contributes some resilience. |
Jack Herer is moderately challenging to grow. Its sativa characteristics require some height management, but the Northern Lights #5 and Shiva Skunk heritage keep it more compact than pure Haze varieties. The relatively fast flowering time (50-60 days) is an advantage inherited from its indica genetics. Outdoor harvest in the Northern Hemisphere typically falls in late September to early October.
¶ Awards & Recognition
- High Times Cannabis Cup -- Jack Herer has won multiple times across the 1990s and 2000s in both Sativa and Overall categories
- The strain is widely recognized as one of the most awarded cannabis cultivars in history
- Named in honor of Jack Herer, whose activism and writing have been foundational to the cannabis legalization movement
- Sensi Seeds' Jack Herer remains one of the most commercially successful and respected strains in the cannabis industry
¶ Similar Strains
- Durban Poison -- Similar creative, energizing sativa effects
- Super Silver Haze -- Comparable multi-award-winning sativa with Haze genetics
- Green Crack -- Similar focus-promoting daytime sativa
- Northern Lights -- Parent lineage through Northern Lights #5
Back to Strain Database | Sativa Strains | Strain Template Guide