Feminized Seeds$24$191+1 Free
Jack Herer
- Creative Daytime Inspiration
- Designed for Advanced Growers
- Indoor & Outdoor Success
Jack Herer is a legendary hybrid (≈ 55% Sativa / 45% Indica) bred from Haze × Northern Lights × Shiva Skunk. It offers up to 20% THC with about 1% CBD, delivering a creative, euphoric high with a clear-headed, slightly spicy-pine bite. Plants grow to 50–60 inches, flower in 8-9 weeks, and produce solid yields both indoors and outdoors.
| Stage | Light Schedule | Temp (°F) | Humidity (%) | Notes |
|---|---|---|---|---|
| Seedling (Week 1) | 18–24 hrs (low intensity) | 72–77 | 65–70 | Keep soil moist, no nutrients (Cal-Mag only if coco). |
| Early Veg (Week 2–3) | 18/6 | 73–78 | 60–65 | Begin light veg feed (¼ strength). Optional LST. |
| Late Veg (Week 4) | 18/6 (~500 PPFD) | 73–78 | 50–55 | Full veg nutrients, prep for 12/12. |
| Flower Transition (Week 5) | 12/12 | 72–78 | 45–50 | Switch to bloom nutrients (P & K boost, lower N). |
| Flower Build (Week 6–7) | 12/12 (~600–700 PPFD) | 70–77 | 40–45 | Bud stacking, trichomes form, strong aroma. |
| Ripening (Week 8) | 12/12 (~700–800 PPFD) | 67–73 | 40 | Trichomes cloudy, pistils turning orange. |
| Final Flush (Week 9) | 12/12 | 65–70 | 35–40 | Flush with plain pH’d water for 5–7 days, harvest when trichomes mostly cloudy with 10–15% amber. |
| Dry & Cure | Darkness | 60 | 55 | Dry 10–14 days, cure in jars for 3–4 weeks. |
Jack Herer sprouts with cotyledons and its first serrated leaves. Keep temps steady at 72–77°F, high humidity (65–70%), and gentle airflow. No nutrients yet—just light watering to encourage root anchoring.
The plant develops fan leaves and a stronger stem. Maintain 18 hours of light, 73–78°F temps, and 60–65% humidity. Start light veg nutrients (¼ strength) and consider LST to shape a wider canopy.
Jack Herer reaches 12–18 inches with bushy growth. Full-strength veg feed and ~500 PPFD light intensity help it thrive. Trim lower growth for airflow and prepare to flip to 12/12 flowering.
The flip to 12/12 initiates stretch and pistil formation. Temps stay 72–78°F, humidity drops to 45–50%. Switch to bloom nutrients with more phosphorus and potassium while lowering nitrogen.
Bud sites stack up and trichomes begin frosting. Maintain 70–77°F temps and 40–45% humidity under ~600–700 PPFD. The aroma shifts to piney and spicy as colas start thickening.
Buds swell and pistils turn orange. Trichomes turn mostly cloudy, signaling peak potency. Keep temps slightly cooler (67–73°F) and humidity at ~40% to enhance resin and terpene preservation.
Reduce nutrients and flush with plain, pH’d water for 5–7 days. Humidity drops to 35–40%, temps 65–70°F. Monitor trichomes: harvest when mostly cloudy with ~10–15% amber for balanced effects.
Chop plants at the end of Week 9 (or late September outdoors). Dry slowly at 60°F / 55% RH for 10–14 days, then cure in jars for at least 3–4 weeks. Expect resinous, pine-spice buds with euphoric, creative effects.
Jack Herer is a solid choice if you want a classic, balanced hybrid with personality. It’s not overly complicated to grow, especially with training and good environment control. The yield, flavor, and effects make the extra effort worthwhile.
If you’ve been looking up how to grow Jack Herer strain, this diary gives you the full path from germination to jar.
👉 Shop Jack Herer seeds at Hypno Seeds
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🔗 Learn more about Jack Herer on Leafly
How long does Jack Herer take to flower?
8-9 weeks indoors; harvest around end of September outdoors.
How tall does Jack Herer grow?
Approximately 50-60 inches under good conditions.
Is Jack Herer difficult to grow?
Moderately easy. Needs good airflow and training (LST/SCROG) to maximize yields and prevent spindly growth.
What yields can I expect?
Indoors: ~1.6-1.9 oz/ft². Outdoors: ~17-20 oz per plant under optimal conditions.
What does Jack Herer taste like?
Pine, spice, and herbal notes with a sweet-earthy background.
What effects does Jack Herer have?
Creative, euphoric, clear-headed, great for daytime or productive sessions.
I planted 10 Super Boof seeds, and all germinated without a hitch. The plants grew strong and healthy, producing dense, frosty buds with a sweet, earthy aroma. The high is uplifting yet relaxing—a perfect balance. Impressive yield too, even with minimal effort
I’ve been growing weed for 30+ years, and to be honest, it’s quite difficult to surprise me. After a few decades of facing different strains, changing growing conditions, and solving whatever problem you could possibly think of, by then, I believe I’ve seen it all in cannabis growing.
Gary Payton defied every single one of my expectations.
The plant thrived, growing to an impressive 6 feet in what seemed like a blink of an eye. It quickly filled out with buds and displayed better smell each day, showing solid proof of superior genetics. The buds were tight, aromatic, and a source of immense pride, surpassing the outcome of many of my previous endeavors.
Hypno Seeds with their Gary Payton strain has won my complete admiration and loyalty. Outstanding genetics in this plant have truly turned what I always thought of to be an experiment with negligible expectations into one of the most satisfying grows of my long career.
Looking forward, my excitement for the next growing season is unparalleled. I can’t wait to see how much I can take these strains, especially with the attention that Gary Payton really does deserve right from the start.
TRUE MAGIC! This strain really stands out. I am trying Hypno Seeds for the first time and I surely made the right choice. I will be ordering more RS11 seeds just to keep this beauty in my garden for the upcoming season. Growing in Virginia and it’s only shown perfection by now.
Starting my latest grow, I decided to try out some Blackberry Kush from Hypno… I planted her on a whim alongside my other favorites. Hypno Seeds said it had to be a powerful plant with rich, fruity scents… Seeing is believing. She developed purplish hues and dense resin coated buds and quickly took center stage in my garden and produced much more than expected. The buds are tightly packed, literally bursting with the heady aroma. The yield? Very impressive for her conditions…
Germinated three seeds using the paper towel method with100% success rate within 48 hours. Planted in 5 gallon pots with living soil under a 315W CMH light. Plants remained compact (3.5 ft) with thick lateral branching, showing high resistance to humidity and minor nutrient fluctuations. Yield per plant: 5.8 oz of extremely dense, trichome-heavy buds. Smell profile during flower: sharp pine, pepper, and a hint of citrus. Harvested at week 9, after trichomes showed 30% amber for peak sedative effects. Smoke report: Potent. Deep relaxation without full sedation. Ideal for stress relief.
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