Galactic JackStrain, Effects, Genetics, Grow Guide & Where to Buy
Galactic Jack earned its place in the modern cannabis canon for a reason , and the genetics live up to the reputation. It is a sativa-dominant (20% indica / 80% sativa) testing at roughly 24% THC, with a flowering window of 9-10 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 Galactic Jack seeds delivered anywhere in the US.
Galactic Jack Quick Stats
THC
24%
Indica
20%
Sativa
80%
Autoflower
No
Flowering
9-10 weeks
Difficulty
intermediate
Indoor Yield
300 gr/m²
Outdoor Yield
350 grams
Plant Height
Tall
Galactic JackEffects & Experience
Reported effects center on energetic, focused, uplifted. Galactic Jack pulls toward mental clarity, conversation, and a light, mobile body feel, a profile that holds up across phenotypes when the seeds are grown to their potential.
Growing Galactic Jack
Growing Galactic Jack fits subtropical and Mediterranean climates with dry late-summer weather to support the longer flower window. Galactic 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 300 gr/m² under quality LED, and outdoor plants given full sun and 5-7 gallon containers reliably produce 350 grams. Expected plant height is Tall, 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 top once at the 4th node to encourage 4-6 even main colas instead of one dominant cola. The most common challenge growers report is late-flower humidity if your indoor RH climbs above 55% during the final two weeks.
Galactic JackLineage & Genetics
This cultivar is part of the Royal King Seeds curated catalog. Read the description as a general profile rather than a guarantee of your specific pack.
Where to Buy Galactic Jack Seeds in the USA
Galactic 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.
Galactic Jack FAQ
Is Galactic Jack indica or sativa?+
Galactic Jack is a sativa-dominant with a 20% indica / 80% sativa split. The effects lean toward mental clarity, mood lift, and conversation.
How long does Galactic Jack take to flower?+
Galactic Jack flowers in 9-10 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 Galactic Jack?+
Galactic Jack tests at approximately 24% 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 Galactic Jack good for beginner growers?+
Galactic 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 Galactic Jack seeds in the USA?+
Royal King Seeds ships Galactic Jack seeds from within the United States, with estimated delivery in approximately 5-7 business days. The product page is at https://royalkingseeds.us/galactic-jack-feminized.