Double BubbleStrain, Effects, Genetics, Grow Guide & Where to Buy
Double Bubble earned its place in the modern cannabis canon for a reason , and the appeal is easy to explain. It is a balanced hybrid (45% indica / 55% sativa) testing at roughly 22% 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 Double Bubble seeds delivered anywhere in the US.
Double Bubble Quick Stats
THC
22%
Indica
45%
Sativa
55%
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
Double BubbleEffects & Experience
Reported effects center on relaxed, focused, calm. Double Bubble pulls toward a balanced state where neither head nor body dominates, a profile that holds up across phenotypes when the seeds are grown to their potential.
Growing Double Bubble
Growing Double Bubble fits outdoor growers with at least 130 frost-free days; the balanced structure handles both heat and cool nights. Double Bubble 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: feed cal-mag from week 2 onward at 2-3 mL per gallon, most reverse-osmosis and soft tap water setups need it; 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 training timing, top at the 4th node, not earlier and not later, for the best canopy distribution.
Double BubbleLineage & Genetics
This cultivar comes from the Royal King Genetics breeding program, an in-house line developed for consistent results across both indoor and outdoor environments. Phenotype consistency is the result of multiple generations of selection rather than commercial seed-run breeding.
Where to Buy Double Bubble Seeds in the USA
Double Bubble 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.
Double Bubble FAQ
Is Double Bubble indica or sativa?+
Double Bubble is a balanced hybrid with a 45% indica / 55% sativa split. The effects lean balanced, neither dominantly head nor body.
How long does Double Bubble take to flower?+
Double Bubble 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 Double Bubble?+
Double Bubble 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 Double Bubble good for beginner growers?+
Double Bubble 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 Double Bubble seeds in the USA?+
Royal King Seeds ships Double Bubble 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/double-bubble-feminized, checkout accepts standard cards, Apple Pay, and crypto.