Neptune OGStrain, Effects, Genetics, Grow Guide & Where to Buy
Few cultivars carry the cult following Neptune OG has built across the US grow community , and the genetics live up to the reputation. It is a indica-dominant (76% indica / 24% sativa) testing at roughly 15% THC, with a flowering window of 8-10 weeks from seed as an autoflower. What follows is a complete reference: terpene-led effects, genetic background, indoor and outdoor grow guidance, and the fastest way to get Neptune OG seeds shipped to your state.
Neptune OG Quick Stats
THC
15%
Indica
76%
Sativa
24%
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 OGEffects & Experience
The dominant effects of Neptune OG are euphoric, calm, and the experience is more nuanced than a simple high/low/sedating label would suggest. Onset is gradual rather than abrupt, the peak holds for roughly an hour, and the comedown is smooth, which is why this strain shows up in so many "daily driver" lists from experienced consumers.
Growing Neptune OG
Growing Neptune OG fits guerrilla growers and balcony cultivators across all 50 states, since the plant ignores light cycle and finishes before fall rains arrive. Neptune OG 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: feed cal-mag from week 2 onward at 2-3 mL per gallon, most reverse-osmosis and soft tap water setups need it; 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 late-flower humidity if your indoor RH climbs above 55% during the final two weeks.
Neptune OGLineage & Genetics
This cultivar comes from the Royal King Genetics breeding program, an in-house line developed for fast finishing and heavy yields under indoor conditions. Phenotype consistency is the result of multiple generations of selection rather than commercial seed-run breeding.
Where to Buy Neptune OG Seeds in the USA
Neptune OG 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 OG FAQ
Is Neptune OG indica or sativa?+
Neptune OG is a indica-dominant with a 76% indica / 24% sativa split. The effects lean toward physical relaxation and a calm, settled headspace.
How long does Neptune OG take to flower?+
Neptune OG 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 OG?+
Neptune OG tests at approximately 15% 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 OG good for beginner growers?+
Neptune OG 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 OG seeds in the USA?+
Royal King Seeds ships Neptune OG 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-og-auto, checkout accepts standard cards, Apple Pay, and crypto.