Jack Herer® Regular Seeds by Sensi Seeds – Legendary Sativa-Indica Hybrid with High THC & Heavy Yield

Jack Herer® Regular Seeds from Sensi Seeds give you the original, award-winning hybrid that’s revered worldwide for its crystal-coated buds, stratospheric high, and unmatched legacy — a true cornerstone of modern cannabis culture.

Feeling overwhelmed by strains that promise euphoria but leave you anxious or unfocused? What if the perfect balance of mind-soaring clarity and deep-body relaxation wasn’t just a myth?

Too many growers plant seeds expecting legendary effects, only to end up with weak yields, unstable phenotypes, or harsh smoke. Without the right genetics, you’re not just wasting time — you’re missing out on the full potential of what cannabis can be. The real problem? Most Jack Herer versions aren’t the real deal.

Jack Herer® Regular from Sensi Seeds is the authentic F1 hybrid that started it all — the only true genetic lineage that delivers consistent, top-shelf results. With four distinct phenotypes, massive trichome production, and a high that’s both energizing and deeply calming, this is the strain that set the standard. No clones, no shortcuts — just pure, uncut genetics from the most respected breeder in the game.

Why This Strain Dominates Grow Rooms and Cannabis Cups

Jack Herer® Regular isn’t just famous — it’s foundational. When you grow this strain, you’re not chasing trends; you’re cultivating a piece of history. Its perfect 50/50 sativa-indica balance means you get the best of both worlds: a lightning-fast cerebral rush that sparks creativity, paired with a smooth, grounding body stone that eases tension without locking you to the couch.

• Produces up to 400 g/m² (11.34 oz/ft²) indoors under optimal conditions
• Thrives in sunny, Mediterranean climates — ideal for outdoor grows in southern Europe
• Flowers in just 9–11 weeks, with some phenotypes finishing faster
• Reaches towering heights of 1.20–1.80 m (3.94–5.91 ft) — perfect for SCROG setups
• Boasts THC levels exceeding 20%, delivering a powerful, long-lasting effect

Technical specifications

• Breeder / Brand: Sensi Seeds
• Type: Regular
• Dominance: 50% sativa / 50% indica hybrid
• Genetics / Cross: Haze × Northern Lights #5 × Shiva Skunk
• Flowering Time: 9–11 weeks (indoor), harvest September–October (Northern Hemisphere)
• Yield: Up to 400 g/m² (11.34 oz/ft²) indoors; 500–600 g/plant (17.64–21.16 oz/plant) outdoors
• Height: 1.20–1.80 m (3.94–5.91 ft) indoors; up to 2 m (6.56 ft) outdoors
• Difficulty: High — best for experienced growers
• Structure and Vigour: Tall, vigorous growth with long internodal spacing and dense branching
• Ideal Climate: Sunny / Mediterranean — thrives in warm, stable environments
• Resistance: Moderate resistance to mold; avoid humid conditions
• Training: Excellent for SCROG and SOG; responds well to topping and LST
• Recommended Pot / Substrate: 18–25 L pots; soil or coco with excellent drainage
• Light: 18/6 during vegetative stage, 12/12 to trigger flowering
• Temperature: 22–26 °C (71.6–78.8 °F) veg, 20–25 °C (68–77 °F) flower
• Humidity: 50–60% in veg, 40–50% in flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• THC: 20%+ (approx.)
• CBD: Low (approx.)
• Aromatic Profile: Earthy, pine, citrus, with sharp herbal notes
• Flavour: Spicy, woody, slightly sweet with a fresh haze finish
• Effect: Cerebral, uplifting, creative — ideal for daytime or social use
• Smell in Grow: Medium — use a carbon filter if discretion is needed

How to Grow Jack Herer® Regular for Maximum Yield and Potency

Get the most from your Jack Herer® Regular with a grow plan tailored to its vigorous, tall structure and high-performance genetics. Whether you're chasing competition-level buds or just want a reliable, resin-drenched harvest, this guide keeps you on track.

Quick overview: Regular seeds from Sensi Seeds · 9–11 week flowering · high difficulty · best in sunny, stable climates.

Safe start: Germinate in a moist, dark environment at 22–25 °C. Transplant carefully once the taproot is ~1 cm (0.39 in) long. For a stronger start, Root Juice BioBizz boosts early root development and resilience.

Directed growth: Use 18/6 light cycles and keep humidity at 50–60%. Train early with LST to control height. A well-aerated soil mix with 100% Organic Biocanna Kit ensures steady, balanced growth without nutrient burn.

Efficient flowering: Switch to 12/12 light schedule. Maintain RH at 40–50% and support heavy colas. At peak bloom, Bloombastic increases resin production and bud density for that legendary sparkle.

Harvest and refinement: Harvest when trichomes turn milky to amber for a balanced high. Flush 7–10 days before harvest. Dry slowly at 18–22 °C (64.4–71.6 °F) and 50–60% RH, then cure for 2–4 weeks to enhance flavor and smoothness.

Frequently Asked Questions

What makes Jack Herer® Regular different from feminized versions?

Regular seeds produce both male and female plants, allowing for breeding and phenotype hunting. This gives you full control over genetics and lets you create your own stabilized lines.

How many phenotypes does Jack Herer® Regular have?

It has four main phenotypes: three sativa-dominant types with tall growth and long flowering, and one indica-dominant version that’s shorter and faster to finish.

Can I grow Jack Herer® Regular outdoors in a colder climate?

It thrives in warm, sunny environments. In cooler regions, grow it in a greenhouse or choose a south-facing spot with maximum sun exposure to ensure it finishes before cold weather hits.

Why is Jack Herer® Regular considered a medicinal strain?

Due to its balanced high and consistent quality, it was officially approved for medicinal use in the Netherlands — a rare honor that speaks to its therapeutic potential for mood and pain.

Personal Experience of Pevgrow’s CEO (Alan)

Jack Herer® Regular was the first strain I ever grew that made me feel like a real cultivator. I started with ten seeds, and the diversity blew my mind — three towering sativas, one compact indica, and the rest in between. I topped them early and ran a tight SCROG, which tamed their height and turned them into horizontal green walls.

The trichomes started appearing by week six — tiny sparkles that turned into a full frost by harvest. I flushed for ten days and dried slowly. The high? A clean, euphoric rush that lasted for hours, followed by deep relaxation. No anxiety, no crash. This isn’t just a strain — it’s a benchmark. If you’ve never grown the original, you haven’t truly grown Jack Herer.