Super JackStrain, Effects, Genetics, Grow Guide & Where to Buy
Super Jack is one of the most-searched cannabis strains in the United States, with a profile that holds up under scrutiny. It is a balanced hybrid (60% indica / 40% sativa) testing at roughly 26% THC, with a flowering window of 55-65 days under a 12/12 photoperiod. This guide pulls together the lineage, the effects, the grow data, and the practical answer to "where can I buy Super Jack seeds in the USA" in one place.
Super Jack Quick Stats
THC
26%
Indica
60%
Sativa
40%
Autoflower
No
Flowering
55-65 days
Difficulty
intermediate
Indoor Yield
up to 450 g/m2
Outdoor Yield
up to 550 g/plant
Plant Height
Medium (5 to 8 FT)
Super JackEffects & Experience
The dominant effects of Super Jack are creative, focused, energetic, 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 Super Jack
Growing Super Jack fits most US climates, the 8-9 week flower fits inside nearly every outdoor window from Florida to Maine. Super Jack 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 up to 450 g/m2 under quality LED, and outdoor plants given full sun and 5-7 gallon containers reliably produce up to 550 g/plant. Expected plant height is Medium (5 to 8 FT), 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.
Super JackLineage & Genetics
Super Jack is offered in the Royal King Seeds catalog. Read the description on this page as a general profile rather than a guarantee of your specific pack; expect some phenotype variation between packs.
Where to Buy Super Jack Seeds in the USA
Super Jack seeds ship from Royal King Seeds from within the United States. Estimated delivery is approximately 5-7 business days; actual timing varies by destination and carrier.
Super Jack FAQ
Is Super Jack indica or sativa?+
Super Jack is a balanced hybrid with a 60% indica / 40% sativa split. The effects lean toward physical relaxation and a calm, settled headspace.
How long does Super Jack take to flower?+
Super Jack flowers in 55-65 days 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 Super Jack?+
Super Jack tests at approximately 26% 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 Super Jack good for beginner growers?+
Super Jack 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 Super Jack seeds in the USA?+
Royal King Seeds ships Super Jack seeds from within the United States, with estimated delivery in approximately 5-7 business days. The product page is at https://royalkingseeds.us/super-jack-feminized.