Chemo Strain — Effects, Genetics, Grow Guide & Where to Buy
Few cultivars carry the cult following Chemo has built across the US grow community — and the genetics live up to the reputation. It is a indica-leaning hybrid (66% indica / 34% sativa) testing at roughly 22% THC, with a flowering window of 8-10 weeks under a 12/12 photoperiod. What follows is a complete reference: terpene-led effects, genetic background, indoor and outdoor grow guidance, and the fastest way to get Chemo seeds shipped to your state.
Chemo Quick Stats
THC
22%
Indica
66%
Sativa
34%
Autoflower
No
Flowering
8-10 weeks
Difficulty
intermediate
Indoor Yield
450-550 g/m²
Outdoor Yield
500-700 g/plant
Plant Height
120-180 cm
Chemo Effects & Experience
Reported effects center on focused, calm. Chemo pulls toward physical relaxation and a quiet, observational headspace — a profile that holds up across phenotypes when the seeds are grown to their potential.
Growing Chemo
Growing Chemo fits cooler climates and high-altitude growers, where the compact structure resists wind and the short flower beats early frost. Chemo is photoperiod, which means you control when it flowers by switching from 18/6 (vegetative) to 12/12 (flowering). Most indoor growers veg for 4-6 weeks before the flip. 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 120-180 cm, with intermediate cultivation difficulty. Practical tips that move the needle: defoliate strategically on day 21 of flower; remove fan leaves blocking interior bud sites without stripping the plant; and flush nutrients in the final 10-14 days for cleaner flavor; trichomes finish properly even on plain pH-adjusted water. The most common challenge growers report is late-flower humidity if your indoor RH climbs above 55% during the final two weeks.
Chemo Lineage & 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 Chemo Seeds in the USA
Chemo 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.
Chemo FAQ
Is Chemo indica or sativa?+
Chemo is a indica-leaning hybrid with a 66% indica / 34% sativa split. The effects lean toward physical relaxation and a calm, settled headspace.
How long does Chemo take to flower?+
Chemo flowers in 8-10 weeks once you flip to 12/12 light cycle. Outdoor harvest typically lands in late September to mid-October across most US zones.
What is the THC content of Chemo?+
Chemo tests at approximately 22% 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 Chemo good for beginner growers?+
Chemo is rated intermediate difficulty. Photoperiod genetics give you control over plant size and harvest timing, which means a bit more responsibility for getting the schedule right. Most growers with one harvest behind them handle this strain without difficulty.
Where can I buy Chemo seeds in the USA?+
Royal King Seeds ships Chemo 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/chemo-feminized — checkout accepts standard cards, Apple Pay, and crypto.