303 OG Feminised
303 OG Feminised: hybrid cannabis seeds picked for South African conditions. 24% THC, with relaxed, happy, euphoric the effects most often reported. Posted discreetly countrywide.
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 150 seeds.
About 303 OG Feminised
Days 1 to 14, seed to fourth node: Expect 303 OG to crack in roughly 48 hours on damp paper towel and to break soil by day three. Growth is even and unhurried — four solid nodes by day 14, spaced somewhere between the two parent types. Damping off is rare if you hold near 70% humidity through this stage.
Weeks 3 to 6, building the frame: One top at node four and a light tie-down is all it asks for. Six leaders and an even canopy across roughly 70 x 70 cm, then it is ready to flip.
Bloom, weeks 1 to 70: The 58/42 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: up to 300 g/m2. Height: Short. Tested at 24% THC. Difficulty: easy.
The Aromatic Three
Leading with Caryophyllene, then Limonene, and Myrcene underneath.
Difficulty: easy. In flower for 60-70 days. Stands Short. Indoors it returns up to 300 g/m2. Outdoors, up to 350 g/plant a plant.
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303 OG 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.
BX3 is the credible stabilisation point for a clone-only 2010s production cultivar. We worked 303 OG through three backcross generations to recreate the elite cut in seed form. A sibling male pollinates the mother each cycle to drive trait fixation.
Pin the trichome production of the elite cut into the population.
Chosen for trichome density, bud structure and the hybrid trait balance the cross was engineered for.
Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.