Jack Herer
Sativa-dom.
ClassicAward Winner
Sensi Seeds (Netherlands)
Netherlands, 1994
25 reviews
Jack Herer was created by Sensi Seeds in the Netherlands in the mid-1990s, named in honor of the famous American cannabis activist and author Jack Herer, who wrote the influential book 'The Emperor Wears No Clothes.' The strain was developed by crossing a Haze hybrid with Northern Lights #5 and Shiva Skunk, blending sativa energy with indica resilience. It was designated a medical-grade strain by the Dutch government in the 1990s and distributed through pharmacies. Jack Herer has won numerous awards and inspired a lineage of 'Jack' strains including Super Jack, J1, and Jack the Ripper.
💊 Cannabinoids
THC20%
CBD0.1%
✨ Effect Profile
🌡️ Terpenes
👃 Aroma & Flavor
Aroma: Fresh pine and spice with earthy herb and woody notes, subtle floral sweetness, bright and invigorating
EarthyPineCitrusWoody
⚕️ Medical & Side Effects
May help with
Depression
Stress
Fatigue
Anxiety (low doses)
PTSD
Headaches
Lack of focus (ADD/ADHD)
Nausea
Possible side effects
Dry mouth
Dry eyes
Paranoia (rare, high doses)
Anxiety (sensitive users)
Dizziness
🧬 Genetics
BreederSensi Seeds (Netherlands)
OriginNetherlands, 1994
Parent strains
Haze (hybrid)
Northern Lights #5
Shiva Skunk
💡 Fun Facts
- The strain is named after Jack Herer, one of the most influential cannabis legalization activists in history, who wrote 'The Emperor Wears No Clothes' — still considered the cannabis legalization bible.
- In the 1990s, the Dutch government recognized Jack Herer as a medical-grade strain and made it available through pharmacies.
- Jack Herer has won the High Times Cannabis Cup nine times — one of the most decorated strains in competition history.
- Its offspring Jack the Ripper and J1 are beloved by sativa enthusiasts worldwide.
- Jack Herer the man died in 2010, but the strain continues to be one of the best-selling and most respected in the world — a fitting legacy.
🏆 Awards
1994
High Times Cannabis Cup
Sativa — 1st Place
1995
High Times Cannabis Cup
Sativa — 1st Place
1999
High Times Cannabis Cup
Sativa — 1st Place
Won 9 Cannabis Cups total across different years and categories
🔗 Similar Strains
Super Silver Haze
Sativa-dominant Hybrid
Northern Lights #5 x Haze x Skunk #1
Shares NL#5 and Haze genetics — energetic, creative, resinous; slightly more intense.
Jack the Ripper
Sativa-dominant Hybrid
Jack's Cleaner x Space Queen
Jack Herer offspring — faster flowering, lemon-pine aroma, powerful cerebral sativa effects.
Shiva Skunk
Indica-dominant Hybrid
Northern Lights #5 x Skunk #1
Parent genetics — shares earthy skunk notes with indica body relaxation.
🌱 Growing Info
| Difficulty | Moderate |
| Flowering | 10-11 weeks (indoor) |
| Outdoor harvest | Early to mid-October |
| Indoor yield | 18 oz/m² (510 g/m²) |
| Outdoor yield | Up to 18 oz (510 g) per plant |
| Height | 3-5 ft indoor / up to 7 ft outdoor |
| Climate | Mediterranean or warm continental; adaptable but benefits from long season |
| Seed price | ±€18 / 5 seeds (€€) |
| Price note | Legendary sativa hybrid |
Light green, medium-density buds with orange pistils, a light dusting of trichomes, and an airy sativa-leaning structure with some indica compactness from the NL#5 lineage
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