MagnumStrain — Effects, Genetics, Grow Guide & Where to Buy in Canada
Magnum is a hybrid cannabis strain with 15% THC and a 8-10 weeks flowering period. It is known for focused and calm effects and grows best in both indoor tents and warm outdoor climates. Magnum seeds are sold at Royal King Seeds Canada with discreet Canada-wide shipping and a high-germination guarantee.
Among the strains Canadian growers consistently come back to, Magnum sits near the top of the list, with a profile that holds up under scrutiny. It is a balanced hybrid (49% indica / 51% sativa) testing at roughly 15%% THC, with a flowering window of 8-10 weeks under a 12/12 photoperiod. On this page we cover the effects, the lineage, the grow profile, and where to buy Magnum seeds in Canada with discreet shipping and a high-germination guarantee.
Magnum Quick Stats
THC
15%%
Indica
49%
Sativa
51%
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
MagnumEffects & Experience
The dominant effects of Magnum are focused, 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 Magnum
Growing Magnum fits indoor tent growers running standard 4x4 setups; the hybrid frame responds well to topping and LST. Magnum 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: flush nutrients in the final 10-14 days for cleaner flavor; trichomes finish properly even on plain pH-adjusted water; and feed cal-mag from week 2 onward at 2-3 mL per gallon — most reverse-osmosis and soft tap water setups need it. The most common challenge growers report is over-feeding nitrogen past week 1 of flower — switch to bloom nutrients within 7 days of seeing pistils.
MagnumLineage & Genetics
Magnum is a Royal King Genetics in-house cross. The parental selection was chosen for hybrid vigor and a balanced effect profile, 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 Magnum Seeds in Canada
Magnum 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.
Magnum FAQ
Is Magnum indica or sativa?+
Magnum is a balanced hybrid with a 49% indica / 51% sativa split. The effects lean balanced — neither dominantly head nor body.
How long does Magnum take to flower?+
Magnum 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 Magnum?+
Magnum 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 Magnum good for beginner growers?+
Magnum 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 Magnum seeds in Canada?+
Royal King Seeds ships Magnum 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/magnum-feminized — checkout accepts standard cards and Interac.