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Neptune Kush Auto
Mellow sativa autoflower with happy and energetic effects and extended stretch and airy colas. Ideal for intermediate growers seeking potency and reliable yields.
◉Flavor:Tropical fruit, sweet haze, earthy undertones
Grower tip: Keep veg short and let the plant finish its auto cycle naturally
Premium stabilized genetics · germination guaranteed
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About Neptune Kush Auto
Neptune Kush is a 10/90 sativa testing at 16% THC with a limonene-dominant terpene profile. At a practical level, this means a plant that stretches 40-60% after the flip and produces elongated colas with good light penetration through the canopy, finishing in 8-10 weeks. The Limonene/Pinene combination shapes both the aromatic profile and the effect character, this is not a one-dimensional strain.
Growing Parameters
Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 400-500g/m². Outdoor in full sun with 5+ gallon containers: 400-600g/plant. Plant height indoors after training: Short-Medium (2-3.5 ft). Feed EC targets: 1.0-1.4 in veg, 1.4-1.8 in peak flower. pH range: 6.0-6.5 in soil, 5.8-6.2 in coco. Limonene production peaks when day/night temperature differential exceeds 10°F in the final two weeks, growers who drop nighttime temps to 62-65°F during this window report stronger aromatic development.
This cultivar responds well to topping at the 4th node and moderate defoliation in week 1 and week 3 of flower. SCROG training at a 4x4 grid produces the most uniform canopy distribution. Rated intermediate difficulty.
Effects and Use
At 16% THC, Neptune Kush delivers happy, energetic, creative effects with a limonene-influenced character. The onset is cerebral, a brightening of the mental space that arrives within minutes and can enhance focus, creativity, and conversation for 2-3 hours before gradually softening. The body stays comfortable without heaviness. The limonene dominance keeps the mental space bright and slightly elevated even when the body relaxes.
Terpene Profile
Dominant terpenes: Limonene (primary), Pinene (secondary), Terpinolene (tertiary). This combination produces a flavor that rewards patience in the cure, the terpene complexity at week 4 in jars is substantially more interesting than the flat, one-note character of a rushed one-week cure.
Who Should Grow Neptune Kush
Best suited for growers who value speed and simplicity, autoflowering genetics mean no light schedule changes, compact plants, and harvest in 10-12 weeks from seed. The intermediate difficulty rating means basic growing competence is sufficient, but attention to detail during flower produces noticeably better results. Ships discreetly to all 50 US states with our germination guarantee.
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Neptune Kush Auto, Cannabinoid & Terpene Reference
Reference ranges aggregated from publicly-reported third-party lab data and breeder documentation. Total THC reported as max-potential (THC + 0.877 × THCA). Individual seed-lot expression may vary by 1-3 percent.
Neptune Kush Auto, Aggregated Grower Yield Reports
Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Neptune Kush Auto autoflower seeds. First-time growers should expect 70-85 percent of these numbers.
| Setup | Yield |
|---|---|
| 3×3 tent, 400W LED, LST | 139g |
| Outdoor, balcony, 5-gal fabric pot | 242g |
Neptune Kush Auto, Sourcing & Genetics
Neptune Kush Auto traces its lineage back to landrace genetics from Asia and was modernized through North American breeders selecting for terpene complexity.
Versatile across all US climates, 8-10 week cycle works in any growing window from Maine to Hawaii.
Neptune Kush Auto, Breeder Information
Royal King GeneticsBred and stabilized in-house by Royal King Genetics , our internal breeding team. Every order is backed by our 95% germination guarantee. Read our full breeding process and about page.
Five generations of selection on Neptune Kush to lock the autoflower trait. Auto trigger reliability and cerebral terpene profile expression are uniform across the population, no rogue photoperiod plants in the pack.
Stabilize the recessive ruderalis trait in Neptune Kush for uniform auto-trigger.
Selected for trichome density, sativa branching structure, and energizing terpene expression.
Royal King Genetics elite-cut archive, pollen from a maintained S1 line of the original elite mother.