Romulan Seeds

Genetics & effects

Romulan is an indica-dominant cannabis variety, listed as approximately 75% indica and 25% sativa. Its precise family tree remains uncertain, although some versions are described as North American Indica crossed with White Rhino. This uncertainty is worth noting when comparing individual plants, as phenotype variation may influence structure, aroma and finishing time.

THC levels are commonly listed around 18–20%, with CBD at approximately 0.1–0.5%. Individual results can vary according to phenotype, environment and cultivation skill. Aromas may combine earthy, woody and herbal notes with pine, spice and a pungent edge. Myrcene, alpha-pinene and beta-caryophyllene are associated with its reported terpene profile.

Experiences are subjective, but consumers often describe Romulan as powerful, calming and deeply relaxed, sometimes accompanied by euphoria or sleepiness. Setting, personal sensitivity and the individual plant can all shape the experience. Explore more feminised seeds in the Kiwi Seed Bank catalogue.

Explore feminised seeds, high thc seeds, the New Zealand grow guide, and the planting calendar.

Explore feminised seeds, high thc seeds, the New Zealand grow guide, and the planting calendar.

Growing in New Zealand

Romulan is generally considered an intermediate-level option. Its indica-led growth can be manageable, but dense flowers call for steady airflow and close humidity control. In New Zealand, outdoor planting commonly begins during spring, from September to November, once local temperatures are reliably suitable. Conditions differ considerably between northern, central and southern areas, so growers should plan around their own microclimate.

Warm, dry or temperate conditions are the best fit. Sheltered positioning can help plants handle changeable weather, while generous spacing allows air to move through the canopy. Avoid persistently damp sites and inspect dense flower clusters regularly to reduce mould risk.

Indoor

Indoors, Romulan may reach up to 120 cm and is commonly listed with an eight-to-nine-week flowering period. Gentle canopy shaping can help distribute light across its branching structure. Maintain dependable ventilation, keep foliage from becoming overcrowded and monitor humidity as flowers gain weight.

Under favourable conditions, published estimates place indoor production at up to 500 g/m². This is a reference figure rather than an assured outcome; lighting, plant count, container size, environment and grower experience all matter.

Outdoor

Outdoor plants may reach up to 200 cm where root space, sunlight and weather are favourable. Choose a sunny, discreet site with free-draining soil and protection from strong winds. In wetter districts, a rain-sheltered position and open canopy may reduce the risk of moisture lingering around flowers.

Estimated outdoor production is up to 800 g per plant in strong conditions, although seasonal variation can be substantial. Regular support may be useful as branches become heavier.

Harvest

New Zealand’s usual outdoor harvest window falls between March and May. Romulan may finish within this period depending on planting date, latitude and phenotype. Watch flower maturity and incoming autumn rain rather than relying on the calendar alone. After cutting, slow, controlled drying in a dark space with airflow helps preserve the variety’s earthy, pine-forward colour and aroma.