Hempstar Auto
Buy Hempstar Auto seeds in South Africa. Sativa · 22% THC · euphoric, focused, relaxed. Every figure on this page is sourced, and every order ships unbranded.
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 2026-09-06 on 400 seeds.
About Hempstar Auto
Will Hempstar handle a South African summer outdoors? Yes. Put this 10/80 sativa in the ground between September and November and you will be cutting from March to May. It will stretch, and it will use every hour of a long summer day, so give it room early rather than trying to contain it later. Bloom runs 50-60 days, placing harvest between March and May across most provinces.
What yield is realistic? up to 400 g/m2 indoors is reachable under decent LED with steady feeding. Outdoors, up to 550 g/plant a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 22% THC with terpinolene in front, the return on effort is good.
How much can go wrong before it shows? Some. Anyone who understands pH, a feeding schedule and a light cycle will be fine. Neglect it entirely and it will suffer, but a single missed watering will not undo the grow.
The Aromatic Three
Leading with Terpinolene, then Limonene, and Ocimene underneath.
Difficulty: easy. In flower for 50-60 days. Stands 90-120 cm. Medium. Indoors it returns up to 400 g/m2. Outdoors, up to 550 g/plant a plant.
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Hempstar 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.
Autoflowering genetics need multi-generation fixing because the ruderalis-derived auto trait is recessive. Hempstar sits at F5 — every plant in the pack autoflowers reliably and finishes inside a tight window.
Stabilise the recessive ruderalis trait in Hempstar for uniform auto-trigger.
Chosen for clear-headed terpene expression, structural manageability and a finish that lands inside the published window.
Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.