Magnum Auto
Magnum Auto: hybrid cannabis seeds picked for South African conditions. 15% THC, with focused, calm 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 2026-09-21 on 425 seeds.
About Magnum Auto
South Africa is really two growing countries, and Magnum does not behave the same way in both. North and east of the escarpment the rain arrives in summer, so this 49/51 hybrid does its flowering while the air is still heavy; in the Western Cape the rain comes in winter, so the same plant ripens through a dry autumn instead. A 49/51 split travels better than either parent across a country running from subtropical coast to semi-desert. The canopy sits open enough to survive a humid KwaZulu-Natal autumn and dense enough to still look the part after a dry Karoo summer. At 15% THC with caryophyllene leading, what changes between a Johannesburg rooftop and a Cape smallholding is the schedule rather than the result.
The Aromatic Three
Leading with Caryophyllene, then Limonene, and Myrcene underneath.
Difficulty: beginner. In flower for approximately 85 days (seed to harvest). Stands Up to 150 cm. Indoors it returns 550-600 g/m2. Outdoors, 100-250 g/plant a plant.
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Magnum 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.
Magnum is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the terpene fidelity the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.
Lock the autoflower trait in Magnum through five generations of selection.
Chosen for vigour, terpene saturation and a tight finish window that allows production planning.
Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.