Grape Inferno Feminised
A indica testing at 18% THC, Grape Inferno Feminised is reported euphoric, calm. 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 2026-09-15 on 175 seeds.
About Grape Inferno Feminised
Days 1 to 14, seed to fourth node: Expect Grape Inferno 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 63: The 79/21 character becomes obvious here. Caryophyllene usually shows in week three and strengthens from there, with trichome cover visible without a loupe from about week five. Indoor yield: 450–550 g/m². Height: Medium to tall. Tested at 18% THC. Difficulty: easy.
The Aromatic Three
Leading with Caryophyllene, then Myrcene, and Bisabolol underneath.
Difficulty: easy. In flower for 56-63 days. Stands Medium to tall. Indoors it returns 450–550 g/m². Outdoors, 450–650 g/plant a plant.
Effects
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At a Glance
In the Packet
Feminised Premium
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Grape Inferno 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.
F3 stabilisation on the Grape Inferno cross. Three rounds of selection have brought the population to roughly 80% trait homogeneity — a small fraction of pheno variance is still present and is being culled in the next cycle.
Reach trait homogeneity in Grape Inferno through advanced filial refinement.
Chosen for purple/dark expression where it shows, dense bud structure and a true indica relaxation profile.
Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.