
Yumboldt Auto
Buy Yumboldt Auto seeds in South Africa. Indica Β· 15% THC Β· relaxed, sleepy, happy. Every figure on this page is sourced, and every order ships unbranded.
Royal King Genetics β Seed-Lot Testing
Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-09-14 on 475 seeds.
About Yumboldt Auto
South Africa is really two growing countries, and Yumboldt does not behave the same way in both. North and east of the escarpment the rain arrives in summer, so this 71/29 indica 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. Dense indica flowers at 15% THC are the wrong shape for a wet summer finish. Between Durban and Richards Bay, once humidity sits above 65% for days at a stretch, botrytis reaches the core of a cola before anything shows on the surface β defoliate early, space plants wider than feels necessary, and keep air moving under the canopy. That same density turns into an advantage on the Highveld: above 1 400 m the autumn nights go cold and dry, linalool sharpens as the temperature drops, and a compact frame shrugs off a Free State storm that would flatten something taller.
The Aromatic Three
Leading with Linalool, then Myrcene, and Caryophyllene underneath.
Difficulty: easy. In flower for 50-60 days. Stands Short. Indoors it returns up to 300 g/m2. Outdoors, up to 350 g/plant a plant.
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Yumboldt Auto β 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.
Yumboldt is our F5 autoflower line. Five rounds of selection have fixed both the autoflower trigger and the indica relaxation profile the cultivar is known for. The recessive ruderalis trait demands this depth of work to express uniformly.
Stabilise the recessive ruderalis trait in Yumboldt for uniform auto-trigger.
Chosen for trichome coverage, stout structure and consistent flowering time across the pack.
Royal King Genetics elite-cut archive β pollen from a maintained S1 line of the original elite mother.