Blue Jack City Feminised
Blue Jack City Feminised for South African growers — indica genetics at 20% THC, reported as relaxed, sleepy, happy. Sourced grow figures on the page, plain packaging, delivered nationwide.
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 2026-09-10 on 175 seeds.
About Blue Jack City Feminised
Days 1 to 14, seed to fourth node: Expect Blue Jack City to crack in roughly 48 hours on damp paper towel and to break soil by day three. Early growth comes in low and wide — broad seed leaves first, then the dark fan leaves the indica side is known for. Four nodes by the end of week two, stacked close together. Damping off is rare if you hold near 70% humidity through this stage.
Weeks 3 to 6, building the frame: Top at the fourth node and the laterals take over fast. A 60 x 60 cm footprint filled by week five is normal, still under 40 cm tall, which is what makes this workable in a small tent.
Bloom, weeks 1 to 79: The 65/35 character becomes obvious here. Linalool usually shows in week three and strengthens from there, with trichome cover visible without a loupe from about week five. Indoor yield: 325–475 g/m². Height: 40–130 cm. Tested at 20% THC. Difficulty: intermediate.
The Aromatic Three
Leading with Linalool, then Myrcene, and Caryophyllene underneath.
Difficulty: intermediate. In flower for 7–9 weeks. Stands 40–130 cm. Indoors it returns 325–475 g/m². Outdoors, 450–650 g/plant a plant.
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Blue Jack City Feminised — 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.
Blue Jack City runs through our F4 programme. Four cycles of phenotype selection have removed the worst of the trait variation; what is left is a tight, predictable population for production.
Carry Blue Jack City from F1 cross to F4 production-ready seed stock.
Chosen for indica vigour, compact bud formation and a reliable finish window.
Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.