RK
Neptune Kush cannabis seeds packaging β€” Royal King Seeds South Africa
SativaAuto
THC 16%
⏱ Quick Finish
SativaAutoflowerIn Stock

Neptune Kush Auto

Neptune Kush Auto: sativa cannabis seeds picked for South African conditions. 16% THC, with happy, energetic, creative the effects most often reported. Posted discreetly countrywide.

Select Pack Size
R220.04ZAR
1
πŸ‡ΏπŸ‡¦Free South Africa Delivery
🌱Germination Cover
πŸ”’Nothing on the Box
βš—

Royal King Genetics β€” Seed-Lot Testing

Figures below come from our own seed-lot testing rather than breeder marketing, taken from a single batch tested 2026-09-09 on 300 seeds.

Germination rate: 97.9% (n=300)
Last QC test date: 2026-09-09
Indoor yield: 410-584 g/mΒ² (avg across 6 verified grower reports)
Outdoor yield: 668-1010 g/plant (avg across 9 verified grower reports)

About Neptune Kush Auto

South Africa is really two growing countries, and Neptune Kush does not behave the same way in both. North and east of the escarpment the rain arrives in summer, so this 10/90 sativa does its flowering while the air is still heavy; in the Western Cape the rain comes in winter, so the same plant ripens through a dry autumn instead. An open sativa canopy is the right structure for a humid coast, which is roughly how Durban Poison ended up the shape it is β€” air moves through the plant instead of sitting in it, and the botrytis pressure that ruins denser cultivars through a KwaZulu-Natal February mostly passes it by. The trade-off is the calendar. A 56 days seed to harvest bloom on the Highveld has to start early, which in practice means seedlings out by October, or the closing weeks run into frost. limonene expression is strongest where day-to-night swings exceed 10Β°C, and at altitude that is simply what autumn does.

The Aromatic Three

Leading with Limonene, then Pinene, and Terpinolene underneath.

Difficulty: easy. In flower for 56 days seed to harvest. Stands 70-100 cm. Indoors it returns 350-400 g/m2. Outdoors, 120-170 g/plant a plant.

Effects

😊Happy
πŸ€‘Energetic
🀩Creative

Reach For It When

✦ Daytime
✦ Creative Projects
✦ Social Activities

Strain Type

Indica 10%Sativa 90%

At a Glance

🧬Potency16% - 21% (Medium-High)
🌿ParentsAutoflowering Sativa-Dominant Hybrid (Undisclosed Lineage)
πŸ”¬Seed TypeAutoflower Sativa
🌑SuitsAnywhere β€” it runs on its own clock
πŸ“…Cut Inβ‰ˆ 10 – 11 weeks from seed, whenever you plant
πŸ“Grows To70-100 cm
βš–οΈTypical ReturnMedium – High
🏠Under Light350-400 g/m2
🌳In the Ground120-170 g/plant
⏱Weeks in Bloom56 days seed to harvest

In the Packet

Reseals +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Inside the Packet
Sealed vial
Reseals +
Royal King Seeds sells seed as an adult collectible and for the preservation of genetics. Knowing and following the law where they live.
1
Neptune Kush Auto
royalkingseeds.co.za
IG
FB
X
πŸ”’Factory-sealed
πŸ’§Water-resistant outer
πŸ›‘οΈFoil-lined inside
🏷️Tamper sticker
πŸ“±QR check
πŸ”’Scratch-off serial

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Neptune Kush Auto β€” Breeder Information

Royal King Genetics

Recreated 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.

Stabilisation Level
F5
Generations
5+
Breeding Programme
Royal King Genetics Auto Line β€” recessive trait stabilisation
Stabilisation Notes β€” What This Means for Your Grow

Five generations of selection on Neptune Kush to lock the autoflower trait. Auto trigger reliability and cerebral terpene profile expression both run uniform across the population β€” no rogue photoperiod plants in the pack.

Breeding Goal

Stabilise the recessive ruderalis trait in Neptune Kush for uniform auto-trigger.

Selection Focus

Chosen for trichome density, sativa branching architecture and an energising terpene expression.

Pollen / Mother Source

Royal King Genetics elite-cut archive β€” pollen from a maintained S1 line of the original elite mother.

Last Batch QC Verified
6 September 2026Β· 95% germination guarantee