RomulanStrain, Effects, Genetics, Grow Guide & Where to Buy
Romulan earned its place in the modern cannabis canon for a reason , and the appeal is easy to explain. It is a indica-dominant (75% indica / 25% sativa) testing at roughly 20% THC, with a flowering window of 8 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 Romulan seeds delivered anywhere in the US.
Romulan Quick Stats
THC
20%
Indica
75%
Sativa
25%
Autoflower
No
Flowering
8 weeks
Difficulty
intermediate
Indoor Yield
around 250 g/m2
Outdoor Yield
Up to 800 gr./plant
Plant Height
Short
RomulanEffects & Experience
Reported effects center on happy, relaxed, sleepy. Romulan pulls toward physical relaxation and a quiet, observational headspace, a profile that holds up across phenotypes when the seeds are grown to their potential.
Growing Romulan
Growing Romulan fits shorter outdoor seasons, Pacific Northwest, New England, Great Lakes, where 7-9 week flowering finishes ahead of October rains. Romulan 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 around 250 g/m2 under quality LED, and outdoor plants given full sun and 5-7 gallon containers reliably produce Up to 800 gr./plant. Expected plant height is Short, 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 training timing, top at the 4th node, not earlier and not later, for the best canopy distribution.
RomulanLineage & 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 Romulan Seeds in the USA
Romulan 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.
Romulan FAQ
Is Romulan indica or sativa?+
Romulan is a indica-dominant with a 75% indica / 25% sativa split. The effects lean toward physical relaxation and a calm, settled headspace.
How long does Romulan take to flower?+
Romulan flowers in 8 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 Romulan?+
Romulan tests at approximately 20% 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 Romulan good for beginner growers?+
Romulan 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 Romulan seeds in the USA?+
Royal King Seeds ships Romulan seeds from within the United States, with estimated delivery in approximately 5-7 business days. The product page is at https://royalkingseeds.us/romulan-feminized.