Critical Jack Feminised
Growing Critical Jack Feminised in New Zealand: a hybrid at 20% THC, focused, relaxed, uplifted. Flowering window and height are on the page where we hold them, blank where we do not.
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 2026-09-16, from a tray sample of 220.
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 Critical Jack Feminised
Will Critical Jack finish outdoors in New Zealand? In most of the country, yes. The outdoor window runs October to April, and a photoperiod finishes as the autumn light shortens, so the question is whether your first frost arrives before it does. Balanced genetics adapt to most of the country, so the honest answer depends on where you are. The regional notes below are the short version.
Questions New Zealand Growers Ask About Critical Jack
What medium suits it? Living soil rewards flavour, coco rewards control and speed. Neither is wrong. Choose the one you will actually maintain.
How much light? More in veg than growers expect, less in late flower than they think. Twelve hours of uninterrupted dark triggers flowering — and uninterrupted means exactly that.
When is it ready? Trichome colour, not the calendar. The published window is 60 days, which is a reasonable figure to plan around, but the plant decides.
Is it beginner-friendly? It is rated medium. That means basic competence with pH and feeding is enough.
Where do I put it? Indoors it is predictable; the indoor-friendly genetics list covers what performs in a tent. Outdoors, see the regional notes above — or the outdoor-season range if the season is your constraint.
How does it arrive? Plain, unbranded packaging with tracking — the detail is on the shipping page.
Effect Profile
Focused, Relaxed, Uplifted is the consensus, and consensus is worth exactly what it sounds like — a starting point. 20% THC sets the scale; limonene and the terpenes alongside it shape the character rather than the strength.
Onset is quick by inhalation and slow by ingestion, which is where most bad experiences begin. Expect either, depending on how much you take.
If potency is what you are shopping for, the high-THC seeds category is sorted for it.
The Terpenes
Limonene leads, caryophyllene sits behind it, and linalool runs underneath.
Temperature changes what you get. Vaporised low, around 180 to 188 degrees, caryophyllene and linalool come through cleanly while limonene stays in the background. Combusted, limonene dominates and the finer detail is largely lost. Same flower, two different experiences.
Who It Suits
Who does well with Critical Jack? Growers who want to control plant size and harvest date, and have the vegetative space to use that control. Anyone past their first grow.
Still deciding? The indoor-friendly genetics list is the narrower place to start.
Published Figures
- Finishes in 60 days
- Under lights: 625 g/m2
- Grown out: 1200 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
Critical Jack Auto
Critical Jack Auto — hybrid, 20% THC on the listing, focused, relaxed, uplifted. Sent in plain packaging with NZ Post tracking and covered by our germination promise.
J1 Feminised
Growing J1 Feminised in New Zealand: a hybrid at 23% THC, creative, happy, uplifted. Flowering window and height are on the page where we hold them, blank where we do not.
Jack Flash Feminised
Jack Flash Feminised, a hybrid listed at 19% THC and described as creative, energetic, relaxed. Posted unbranded and tracked to any New Zealand address, with the grow figures we could trace on the listing.
XJ-13 Feminised
Hybrid genetics for a New Zealand grow. XJ-13 Feminised carries a listed 23% THC and reads energetic, happy, relaxed. Priced in NZD, GST included, delivered nationwide.
Where Critical Jack Feminised Comes From
Documented parentage is Critical Plus × Jack Herer. 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 — 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.