Neptune OG Auto
Neptune OG Auto for South African growers — indica genetics at 15% THC, reported as euphoric, calm. 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 2026-09-24 on 125 seeds.
About Neptune OG Auto
Days 1 to 14, seed to fourth node: Expect Neptune OG to crack in roughly 48 hours on damp paper towel and to break soil by day three. Early growth comes in low and wide — broad seed leaves first, then the dark fan leaves the indica side is known for. Four nodes by the end of week two, stacked close together. Damping off is rare if you hold near 70% humidity through this stage.
Weeks 3 to 6, building the frame: Top at the fourth node and the laterals take over fast. A 60 x 60 cm footprint filled by week five is normal, still under 40 cm tall, which is what makes this workable in a small tent.
Bloom, weeks 1 to 60: The 76/24 character becomes obvious here. Linalool usually shows in week three and strengthens from there, with trichome cover visible without a loupe from about week five. Indoor yield: up to 200 g/m2. Height: 90 cm. Tested at 15% THC. Difficulty: easy.
The Aromatic Three
Leading with Linalool, then Myrcene, and Caryophyllene underneath.
Difficulty: easy. In flower for 50-60 days. Stands 90 cm. Indoors it returns up to 200 g/m2. Outdoors, up to 300 g/plant a plant.
Effects
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Neptune OG 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.
Five generations of Royal King Genetics autoflower stabilisation on Neptune OG. Auto trigger time, finish window and resin density all run uniform — no photo-hybrid surprises in the pack.
Lock the autoflower trait in Neptune OG through five generations of selection.
Chosen for resin output, a low-slung stature and a clean indica terpene fingerprint.
Royal King Genetics select-mother programme — pollen drawn from an internally maintained reversed-female line.