Apollo 13Strain, Effects, Genetics, Grow Guide & Where to Buy
Apollo 13 earned its place in the modern cannabis canon for a reason , and the appeal is easy to explain. It is a sativa-dominant (5% indica / 95% sativa) testing at roughly 25% 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 Apollo 13 seeds delivered anywhere in the US.
Apollo 13 Quick Stats
THC
25%
Indica
5%
Sativa
95%
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
Apollo 13Effects & Experience
Reported effects center on happy, energetic, creative. Apollo 13 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 Apollo 13
Growing Apollo 13 fits indoor growers with vertical headroom; sativa stretch can double plant height after the 12/12 flip. Apollo 13 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 maintain canopy airflow with an oscillating fan moving air through the leaves, not just above them, to prevent powdery mildew. The most common challenge growers report is training timing, top at the 4th node, not earlier and not later, for the best canopy distribution.
Apollo 13Lineage & Genetics
This cultivar comes from the Royal King Genetics breeding program, an in-house line developed for long-season outdoor expression and complex terpene profiles. Phenotype consistency is the result of multiple generations of selection rather than commercial seed-run breeding.
Where to Buy Apollo 13 Seeds in the USA
Apollo 13 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.
Apollo 13 FAQ
Is Apollo 13 indica or sativa?+
Apollo 13 is a sativa-dominant with a 5% indica / 95% sativa split. The effects lean toward mental clarity, mood lift, and conversation.
How long does Apollo 13 take to flower?+
Apollo 13 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 Apollo 13?+
Apollo 13 tests at approximately 25% 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 Apollo 13 good for beginner growers?+
Apollo 13 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 Apollo 13 seeds in the USA?+
Royal King Seeds ships Apollo 13 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/apollo-13-feminized, checkout accepts standard cards, Apple Pay, and crypto.