Jack Herer Feminised Seeds

🏆 Jack Herer Cannabis Seeds: A True Hall-of-Famer

Few strains shaped cannabis culture like Jack Herer—a true hall-of-famer that carries the name of the man who fought for the plant. A nine-time Cannabis Cup winner and a benchmark for any breeder trying to get it right, this three-way masterpiece of Haze, Shiva Skunk, and Northern Lights delivers a high that’s pure clarity. It’s the iconic blend of razor-sharp mental lift with a mellow body release that defined a generation of smokers.

Quick Stats

Jack Herer is a balanced hybrid (≈ 55% sativa / 45% indica) with THC typically 15–24% (CBD: <1%). Effects lean cerebral and energetic with a mellow undertone, making it a true anytime classic. She usually wraps in 8–9 weeks indoors, though some phenos may lean closer to 10. 8–9 remains the sweet spot. Outdoors in Australia she’s generally ready: North mid-April • Mid late April • South early May. Typical yields are 450–550 g/m² indoors and up to 700 g/plant outdoors in dialled-in climates. Flavour is classic pine and earthy spice with a bright citrus snap—driven by that electric terpinolene profile. Matty’s tip: control the stretch early—top hard and train wide or she’ll try to kiss the lights.

The Grow (Matty’s Way)

Skill level: Medium. She’s resilient but requires a bit of control to manage her height and maximise her potential.

Training & support: Jack loves to stretch like a teenager hitting a growth spurt. Be aggressive with topping and use a SCROG to spread her canopy wide. This will keep her height in check and boost light to lower bud sites. Her buds are dense, so stakes are a must in late flower. I once left her untopped and she hit the tent roof by week 5—never again.

Matty’s Feeding & pH Know-How: “She doesn’t need a crazy feed—a steady EC of 1.4–1.8 is plenty during bloom. Keep your pH locked in at 6.0–6.5 and don’t overwater—let that topsoil get dry. She’s a happy plant when her roots can breathe.”

Flavour & Effects

On the nose: A sharp scent of pine and rich earth with a peppery, citrusy undertone. Classic. Unmistakable.

On the tongue: A clean, crisp taste of pine and lemon on the inhale, with a spicy, woody finish on the exhale. A truly old-school flavour that lingers.

First wave: A quick rush of cerebral clarity and focus. Tension eases into sharp focus and good vibes. The flavour is instantly recognisable to old-school heads.

Then it settles: A gentle, creeping body relaxation that melts away tension without knocking you out. You stay present and alert, but with a warm, mellow undertone.

Grow Log: Inside the Tent

Phase/Week	Key Action/Status	Matty’s Tip
Veg Week 3	Strong lateral growth; early stretch kicking in.	Top her now to tame the height—she rebounds quick and loves SCROG.
Flower Week 2	Stretching hard; first pistils forming.	Switch to bloom feed, keep RH tight—Jack will bolt if unchecked.
Flower Week 5	Buds stacking dense; terps sharpening with pine and citrus.	I’ve lost whole branches here in humid summers—don’t underestimate airflow.
Flower Week 7	Resin production peaking; aroma hitting max.	Stake heavy tops now or they’ll bend under their own weight.
Harvest Window: Weeks 8–9	Trichomes are milky with amber tips; terps are at their peak.	Old-school heads swear week 9 gives you the true electric Jack kick. Flush 7–10 days. A patient hand gets the best results—don’t rush the final sparkle.

Advanced Notes (For the Nerds)

• Terpenes: Terpinolene (pine/citrus spark), Caryophyllene (spicy depth), Myrcene (earthy base).
• VPD & RH: 1.0–1.2 kPa in late veg, 1.3–1.5 kPa in flower. Keep RH 40–50% in bloom.
• PPFD: 700–900 µmol/m²/s in flower—push higher carefully to avoid bleaching.
• EC: Steady at 1.4–1.8 in bloom. No wild swings.
• Pheno notes: Some phenos lean sativa (tall, long finish), others lean indica (stocky, faster). Both are legit Jack.

🚫 Common Pitfalls to Avoid

• Stretching: She’ll double in size if you blink—top early, spread wide, or she’ll own your tent.
• Airflow: Airflow isn’t optional—it’s survival. Those Northern Lights genes bring density, and mould will feast on it without proper ventilation.
• Overwatering: She’s resilient but sensitive roots hate soggy soil. Dry-back is key.
• Harvest timing: Don’t chop early—the real Jack sparkle hits in the last week.
• Pheno hunting: Don’t panic if your mate’s Jack looks different—some lean tall, some stocky. Both are legit.

🚫 Mythbusting

Myth: “Jack Herer is all sativa head high.”
     Truth (Matty): “Nah—she’s balanced. Sharp up top, mellow in the body. That’s the magic.”

Myth: “All Jack phenos taste the same.”
     Truth (Matty): “Jack’s flavour is always unmistakably Jack, but phenos shift between pine-heavy or citrus-heavy. That variety is part of the legend.”

Myth: “Jack is outdated next to modern hybrids.”
     Truth (Matty): “She’s a benchmark. If a breeder can’t make a good Jack, they can’t breed. Period.”

Who It’s For?

Perfect If You:

• Want a classic hybrid with a hall-of-fame reputation.
• Are chasing a social, creative, daytime-friendly high.
• Appreciate an old-school pine/citrus profile.

Maybe Not For You If You:

• Only chase knockout indicas.
• Grow in a low tent with no plan for stretch.

The Legend Behind the Strain

Named after activist and author Jack Herer, this strain carries a legacy as bold as the man himself. His book The Emperor Wears No Clothes was a rallying cry for cannabis long before the mainstream caught on. He fought for the plant long before it was safe or popular to do so—this strain carries that same fire. This classic is a living tribute—potent, complex, and enduring. A true piece of cannabis history you can grow.

🏆 Final Verdict

• An all-time classic with a cultural legacy.
• A balanced high perfect for focus and flow without the crash.
• A rewarding grow that demands training but pays off big.

Matty’s Final Word: “This isn’t just weed—it’s history in a jar.”