Neptune KushStrain, Effects, Genetics, Grow Guide & Where to Buy
Among the strains American growers consistently come back to, Neptune Kush sits near the top of the list, but the data behind the hype is what holds growers' attention. It is a sativa-dominant (10% indica / 90% sativa) testing at roughly 16% THC, with a flowering window of 8-10 weeks from seed as an autoflower. On this page we cover the effects, the lineage, the grow profile, and where to buy Neptune Kush seeds in the United States with discreet shipping and a 95% germination guarantee.
Neptune Kush Quick Stats
THC
16%
Indica
10%
Sativa
90%
Autoflower
Yes
Flowering
8-10 weeks from seed
Difficulty
intermediate
Indoor Yield
450-550 g/m²
Outdoor Yield
500-700 g/plant
Plant Height
60-100 cm
Neptune KushEffects & Experience
Neptune Kush is best known for happy, energetic, creative. The effects come on within the first 10 minutes and settle into a stable plateau that lasts 90 minutes to two hours at typical doses. Growers and users consistently note that the high stays true to its profile rather than drifting, what you feel in the first 20 minutes is what you have for the next 90.
Growing Neptune Kush
Growing Neptune Kush fits cooler climates where photoperiod strains struggle to finish before frost, autoflower timing is calendar-driven, not daylight-driven. Neptune Kush runs on an 18/6 light schedule from seed to harvest, autoflower genetics ignore photoperiod, so there is no flip and no light-cycle change. Indoor yields land around 450-550 g/m² under quality LED, and outdoor plants given full sun and 5-7 gallon containers reliably produce 500-700 g/plant. Expected plant height is 60-100 cm, with intermediate cultivation difficulty. Practical tips that move the needle: flush nutrients in the final 10-14 days for cleaner flavor; trichomes finish properly even on plain pH-adjusted water; and apply low-stress training in week 2 of veg, bend the main stem horizontally and tie down to expose lower nodes. The most common challenge growers report is calcium and magnesium supplementation under bright LED lighting; cal-mag at 2-3 mL/gal from week 2 prevents the most common deficiency.
Neptune KushLineage & Genetics
Neptune Kush is a Royal King Genetics in-house cross. The parental selection was chosen for cerebral effects and aromatic complexity, then stabilized over multiple generations to lock in phenotype expression. Seeds run true to the description on this page rather than spreading across a wide range of expressions.
Where to Buy Neptune Kush Seeds in the USA
Neptune Kush seeds ship from Royal King Seeds to all 50 US states with discreet packaging and a 95% germination guarantee. Average delivery is 3-5 business days, with the fastest routes typically reaching Alaska, Arizona, Arkansas, California, Colorado.
Neptune Kush FAQ
Is Neptune Kush indica or sativa?+
Neptune Kush is a sativa-dominant with a 10% indica / 90% sativa split. The effects lean toward mental clarity, mood lift, and conversation.
How long does Neptune Kush take to flower?+
Neptune Kush flowers in 8-10 weeks from seed from seed, since autoflower genetics ignore light cycle. Outdoor harvest typically lands 70-90 days after planting.
What is the THC content of Neptune Kush?+
Neptune Kush tests at approximately 16% THC when grown to its potential. Real-world numbers depend on grow conditions, harvest timing, and curing, well-grown phenotypes can land at the high end of that range, while poorly cured flower tests lower.
Is Neptune Kush good for beginner growers?+
Neptune Kush is rated intermediate difficulty. The autoflower genetics simplify the process, no light schedule changes and a fast seed-to-harvest timeline make it forgiving for first-time growers. Most growers with one harvest behind them handle this strain without difficulty.
Where can I buy Neptune Kush seeds in the USA?+
Royal King Seeds ships Neptune Kush seeds to all 50 US states with discreet packaging, 3-5 day delivery, and a 95% germination guarantee. The product page is at https://royalkingseeds.us/neptune-kush-auto, checkout accepts standard cards, Apple Pay, and crypto.