Yumboldt Feminised
Yumboldt Feminised for South African growers — indica genetics at 15% 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 2026-09-14 on 175 seeds.
About Yumboldt Feminised
Will Yumboldt handle a South African summer outdoors? Yes. Put this 71/29 indica in the ground between September and November and you will be cutting from March to May. It stays low enough not to clear a boundary wall, and the short frame carries more weight than its size suggests. Bloom runs 60 days, placing harvest between March and May across most provinces.
What yield is realistic? 350 g/m2 indoors is reachable under decent LED with steady feeding. Outdoors, 400 - 600 g/plant a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 15% THC with myrcene in front, the return on effort is good.
How much can go wrong before it shows? A fair amount. Miss a watering, feed roughly, let the temperature swing — it absorbs most of that without much loss of quality. If you have kept a tomato alive through January, this is within reach.
The Aromatic Three
Leading with Myrcene, then Humulene, and Linalool underneath.
Difficulty: beginner. In flower for 60 days. Stands 1 m. Indoors it returns 350 g/m2. Outdoors, 400 - 600 g/plant a plant.
Effects
Reach For It When
Strain Type
At a Glance
In the Packet
Feminised Premium
Seeds
the source
inside
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Yumboldt 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.
Two backcross generations to the recurrent parent have welded Yumboldt into a stable seed line. The cross-derived bud-to-leaf ratio expresses uniformly — no surprise-pheno hunting once the pack pops.
Carry a clone-derived recent-era hybrid through to a stable seed pack.
Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.
Royal King Genetics in-house mother stock — pollen taken from a sibling male drawn from the same selected pheno population.