
Neptune Kush Feminised
A sativa testing at 16% THC, Neptune Kush Feminised is reported happy, energetic, creative. Grown right across the country, from the Cape to the Lowveld. Discreet nationwide delivery and a germination guarantee.
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 2026-04-12 on 450 seeds.
About Neptune Kush Feminised
Neptune Kush announces itself in a fixed order, and limonene is always first out of the jar — a citrus lift that arrives before the lid is fully off, lemon rind and tangerine with a sweetness trailing it. pinene follows mid-palate, adding resinous clarity. The lab figure on this 10/90 sativa is 16% THC, though potency is the least interesting thing about it — plenty of cultivars test the same and taste of very little.
Growing for Aroma Rather Than Weight
The choices that bring out the Limonene/Pinene/Terpinolene profile in Neptune Kush are not the choices that maximise yield, and at some point you have to pick one. The aromatic version starts in living soil — microbial activity in an established no-till bed produces secondary metabolites a synthetic feed schedule never will, and South Africa has enough good local compost and worm-casting suppliers to make that affordable rather than aspirational.
Through 53 days (7-8 weeks), stop foliar spraying after week two: anything that lands on a developing trichome is still there at harvest. The closing three weeks decide which terpenes end up in front — nights held at 16-18°C push limonene forward, a warmer finish protects the lighter terpinolene top notes, and you cannot have both. Decide which version of the strain you want before you get there.
Most of the loss happens after the cut. Hang for 10-14 days at 15-18°C and 55-60% humidity, which through a South African summer realistically means a climate-controlled room or a wine fridge set to 16°C. Then jar it and burp twice daily for the first fortnight. The pinene layer that makes this cultivar worth the trouble does not surface until somewhere between day 21 and day 28 in glass.
Difficulty: intermediate. In flower for 53 days (7-8 weeks). Stands 80-140 cm. Indoors it returns 550-600 g/m2. Outdoors, 600-650 g/plant a plant.
Aroma, Flavour and Effect
The first thing Neptune Kush does at 16% THC is lift it with a bright, nearly effervescent citrus. The happy, energetic, creative effects follow within minutes, as a sharpening rather than a lift: colour reads more saturated, music holds more detail, conversation wanders further than it would have. It runs two to three hours on a plateau instead of a peak, so nothing drops out from under you at the end. Pinene sits underneath all of it, adding an alertness that keeps thinking crisp.
The Aromatic Three
Leading with Limonene, then Pinene, and Terpinolene underneath. How this combination survives the move from flower to vapour or smoke is not a given. Held low, at 180-188°C, the pinene and terpinolene notes stay legible with limonene underneath them. Run it hotter, or burn it, and the three collapse into one — still pleasant, but without the separation that makes this cultivar worth paying attention to.
Suitability and Recommendations
Who does well with Neptune Kush? Indoor growers who want the harvest date to be their decision. Outdoor growers who want to choose the moment flowering starts. Anyone with the room and the patience to veg it properly before flipping. It is rated intermediate, which in practice means a moderate learning curve that rewards attention without needing laboratory conditions. Sent nationwide in plain, unbranded packaging, with sourced grow data on every strain page.
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Neptune Kush 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.
Neptune Kush has been the target of countless seed-bank backcross programmes. Ours is BX3 — three rounds of crossing the elite cut back to the parental line until trait expression evened out. The pack grows true to the mother cut.
Recreate the Neptune Kush clone-only cut in stable seed form.
Chosen for trichome density, sativa branching architecture and an energising terpene expression.
Royal King Genetics elite-cut archive — pollen from a maintained S1 line of the original elite mother.