Critical Jack Auto
A hybrid testing at 20% THC, Critical Jack Auto is reported focused, relaxed, uplifted. Grown right across the country, from the Cape to the Lowveld. Discreet nationwide delivery and a germination guarantee.
Royal King Genetics — Seed-Lot Testing
Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-09-05 on 350 seeds.
About Critical Jack Auto
Critical Jack announces itself in a fixed order, and limonene is always first out of the jar — a citrus lift that arrives before the lid is fully off, lemon rind and tangerine with a sweetness trailing it. caryophyllene follows mid-palate, adding a grounding spice. The lab figure on this 50/50 hybrid is 20% THC, though potency is the least interesting thing about it — plenty of cultivars test the same and taste of very little.
The Aromatic Three
Leading with Limonene, then Caryophyllene, and Linalool underneath.
Difficulty: easy. In flower for 70-80 days seed to harvest. Stands Up to 140 cm. Indoors it returns 25-100 g/plant. Outdoors, 100-230 g/plant a plant.
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Critical Jack Auto — Breeder Information
Royal King GeneticsRecreated and stabilised by Royal King Genetics, the breeding team behind this catalogue. Seed lots are germination-tested before they ship. More on the breeding process and about page.
Critical Jack is an autoflowering line that has been progressed through five rounds of Royal King Genetics autoflower stabilisation. The autoflower trait is recessive — fixing it takes multi-generation work — and at F5 the auto trigger and finish window are welded across the pack.
Reach auto trigger and finish-window uniformity for the Critical Jack pack.
Chosen for terpene profile, vigour, structure and finish-time consistency.
Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.