
Jack Herer Feminised
Jack Herer Feminised, a hybrid listed at 18% THC and described as focused, energetic. Posted unbranded and tracked to any New Zealand address, with the grow figures we could trace on the listing.
What the seed lot did on the bench
Every lot is checked before it goes on the shelf, and the yield figures come from New Zealand growers who sent us a harvest weight against a batch code. This lot was read on 2026-09-03, from a tray sample of 460.
Outdoor figures come from a New Zealand season, so they run below what the same cultivar reaches somewhere with a longer, drier autumn. Treat them as what this plant does here. The full report for this lot sets out the method and the terpene panel.
About Jack Herer Feminised
Jack Herer is bought for what comes off it, and the sourced figures are 500-600g/mΒ² under lights and 120 - 200 g/plant from a plant grown out. Those are ceilings, not promises β pot volume, light intensity and how honestly you feed decide where you land inside them. Run the numbers for your own tent with the yield calculator before committing to a pack size, and put it next to the rest of the high-yield strains if weight is the whole point.
Getting the Weight Out of Jack Herer
What the sourced data gives for this cultivar: 500-600g/mΒ² under lights, 120 - 200 g/plant from a plant grown outside. Reaching either is an environment problem before it is a genetics one.
Root volume sets the ceiling before a single flower forms. Under-pot a plant and no feeding schedule rescues it. Get the container right early and the plant does the rest.
Light is the second lever, and the one most growers get wrong in both directions β too little through veg, too much in late flower where it bleaches rather than builds. Steady beats aggressive.
The third is the fortnight around the flip. The stretch after the flip decides your final canopy shape, and it is the last moment training does anything useful.
Feed to the plant rather than the calendar. Our nutrient calculator gives a starting schedule; the plant will tell you where it is wrong. Worth a side-by-side comparison before you commit if weight is the deciding factor.
What Jack Herer Is Like
Reported effects cluster around focused, energetic. At 18% THC that is a meaningful figure rather than a decorative one, and the sensible approach with anything in this range is to start lower than you think and wait longer than feels necessary.
The 45/55 balance shapes where it lands: even-handed, with the dominant direction shifting by dose more than by time of day. Tolerance moves this more than any other variable, which is why two people describe the same jar differently.
Prefer something gentler? The CBD-forward strains range trades peak potency for balance.
The Terpenes
Myrcene leads, limonene sits behind it, and pinene runs underneath.
Aroma is not fixed at harvest β it develops. Fresh flower leads hard with myrcene; three or four weeks in sealed glass at a stable 16 to 18 degrees lets limonene and pinene come forward as the sharper volatiles clear. Jars opened at week one and week five smell like different plants.
Who It Suits
Jack Herer is rated medium. That sits in the middle β you want a working understanding of pH and feeding, but nothing exotic. Being a photoperiod means you decide when it flowers, and therefore how big it gets.
Shipped nationwide in plain packaging. Every strain page carries whatever grow data we could actually source, and nothing we could not.
Published Figures
- Finishes in 10 to 12 weeks
- Under lights: 500-600g/mΒ²
- Grown out: 120 - 200 g/plant
- Height: Medium
- Difficulty: medium
Reported Effects
Descriptive, and ordered by how prominently each one appears in the sources we hold. Not a survey, and not a measurement.
Best For
Where It Sits
The Numbers
How it arrives
Feminised Premium
Seeds
authenticity
lining
number
Related Strains

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Neville's Haze Feminised
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Jack Flash Feminised
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Where Jack Herer Feminised Comes From
Documented parentage is Haze Γ Northern Lights #5 Γ Shiva Skunk. Where a cultivar's origin is recorded we name it on this page; where it is contested or simply unknown, the field stays empty rather than being filled with something plausible.
We did not originate the cultivars in this catalogue and do not claim to have. What we do is select and stabilise the lines we sell, so that a pack grows out more uniformly than an unworked one β which matters more in New Zealand than in most places, because an outdoor grower here is working to a frost date rather than an open-ended season. The stabilisation programme sets out how that works and what it does not cover.
Every pack is covered by our germination promise: follow the method in the germination guide and seed that fails to open is replaced free within 30 days.