Grapefruit Diesel Feminised
Grapefruit Diesel Feminised for South African growers — hybrid genetics at 18% THC, reported as relaxed, sleepy, uplifted. 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 2026-09-12 on 150 seeds.
About Grapefruit Diesel Feminised
Will Grapefruit Diesel handle a South African summer outdoors? Yes. Put this 60/40 hybrid in the ground between September and November and you will be cutting from March to May. The balanced genetics take what the country gives them, from coastal humidity in KwaZulu-Natal through to dry Karoo heat. Bloom runs 60 days (indoor), placing harvest between March and May across most provinces.
What yield is realistic? Up to 450g/m² indoors is reachable under decent LED with steady feeding. Outdoors, Up to 550 gr a plant is normal in 50 litre pots or straight into prepared ground in full sun. At 18% THC with caryophyllene 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 Caryophyllene, then Myrcene, and Humulene underneath.
Difficulty: medium. In flower for 60 days (indoor). Stands Medium. Indoors it returns Up to 450g/m². Outdoors, Up to 550 gr a plant.
Effects
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Strain Type
At a Glance
In the Packet
Feminised Premium
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Grapefruit Diesel 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.
Grapefruit Diesel carries clone-derived parents from the recent-era. We backcrossed twice to the dominant parent (BX2) to weld cut-specific traits into seed-stable form. Vigour and bud density run uniform across the population.
Fix parent-cut traits in Grapefruit Diesel without narrowing the population too far.
Chosen for balanced indica/sativa expression, terpene fidelity and pack-to-pack uniformity.
Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.