Green PoisonStrain — Effects, Genetics, Grow Guide & Where to Buy in Canada
Green Poison is a indica cannabis strain with 15% THC and a 8-10 weeks flowering period. It is known for euphoric and creative effects and grows best in indoor tents and cooler Canadian outdoor zones. Green Poison seeds are sold at Royal King Seeds Canada with discreet Canada-wide shipping and a high-germination guarantee.
Green Poison earned its place in the modern cannabis canon for a reason — and the genetics live up to the reputation. It is a indica-dominant (80% indica / 20% sativa) testing at roughly 15%% THC, with a flowering window of 8-10 weeks under a 12/12 photoperiod. Below we walk through what to expect from the high, how the plant grows in a tent or outdoor garden, the parental genetics behind the cultivar, and how to get Green Poison seeds delivered anywhere in Canada.
Green Poison Quick Stats
THC
15%%
Indica
80%
Sativa
20%
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
Green PoisonEffects & Experience
Reported effects center on euphoric, creative. Green Poison 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 Green Poison
Growing Green Poison fits indoor growers in compact spaces; indica genetics stay short and bushy without aggressive training. Green Poison 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: top once at the 4th node to encourage 4-6 even main colas instead of one dominant cola; and defoliate strategically on day 21 of flower; remove fan leaves blocking interior bud sites without stripping the plant. The most common challenge growers report is late-flower humidity if your indoor RH climbs above 55% during the final two weeks.
Green PoisonLineage & 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 Green Poison Seeds in Canada
Green Poison seeds ship from Royal King Seeds to every Canadian province and territory with discreet packaging and a high-germination guarantee. Average delivery is 3-7 business days, with the fastest routes typically reaching British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories.
Green Poison FAQ
Is Green Poison indica or sativa?+
Green Poison is a indica-dominant with a 80% indica / 20% sativa split. The effects lean toward physical relaxation and a calm, settled headspace.
How long does Green Poison take to flower?+
Green Poison 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 Canadian growing zones.
What is the THC content of Green Poison?+
Green Poison 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 Green Poison good for beginner growers?+
Green Poison 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 Green Poison seeds in Canada?+
Royal King Seeds ships Green Poison seeds to every Canadian province and territory with discreet packaging, tracked delivery, and a high-germination guarantee. The product page is at https://royalkingseeds.ca/green-poison-feminized — checkout accepts standard cards and Interac.