G13 Seeds

Genetics & effects

G13 is a feminised, indica-dominant hybrid with approximately 70% indica and 30% sativa influence. Its exact ancestry remains uncertain, so it is best understood as a G13-derived selection rather than a strain with a fully documented family tree. The plants generally show compact structure, broad foliage and closely spaced flowering sites. This variety is listed in the Kiwi Seed Bank catalogue for growers seeking a potent, predominantly indica option.

THC content is listed at 20–24%, while CBD may range from 0–0.7%. Individual experiences are subjective and may vary. Some people describe the effects as initially happy, euphoric or uplifting, followed by a calmer, deeply relaxed or sleepy feeling. Increased appetite is also sometimes reported. Its aromatic profile combines earthy, woody and pungent skunk notes with a sweeter berry edge. Myrcene, caryophyllene and limonene are the principal listed terpenes.

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 the named country

In New Zealand, G13 is best suited to intermediate growers who can manage moisture, airflow and seasonal temperature shifts. It can perform in temperate conditions and is also compatible with hot, dry environments. For outdoor cultivation, spring planting falls between September and November. Choose timing according to local frost dates, daylight hours and the conditions in your own region.

The dense, indica-leaning growth benefits from steady ventilation and enough space between branches. New Zealand’s variable humidity makes regular inspection useful, particularly later in flowering when tightly packed flowers may hold moisture. Avoid prolonged leaf wetness and remove damaged plant material promptly to reduce mould risk. Grow only where your circumstances and applicable requirements permit.

Indoor

Indoors, G13 may reach up to 100 cm, making it a practical candidate for rooms with limited vertical clearance. A consistent light schedule, moderate feeding and stable environmental settings support its naturally compact form. Gentle canopy training can help expose lower flowering sites, while selective thinning may improve airflow through the centre of the plant.

Flowering usually takes around 8–9 weeks. Under well-managed conditions, the listed indoor yield is up to 600 g/m², although actual output depends on phenotype, equipment, environment and grower experience. As flowers develop, odour may become pronounced, with pungent skunk and earthy notes often standing out.

Outdoor

Outdoors, plants may grow up to 110 cm and remain relatively discreet compared with taller sativa-dominant varieties. Select a sunny position with free-draining soil and shelter from severe wind. In wetter areas, spacing and airflow deserve extra attention. In hot, dry districts, monitor moisture levels so the root zone does not remain excessively dry for long periods.

The listed outdoor yield is up to 1,000 g per plant in favourable conditions. This figure is a reference rather than an assured outcome, as weather, soil, plant health and seasonal timing all influence final performance.

Harvest

New Zealand’s typical outdoor harvest window is March–May. Check flower maturity rather than relying only on a calendar date, as regional weather and phenotype can shift timing. Indoors, use the 8–9 week flowering range as a guide and observe each plant individually. Plan for clean handling, good air movement and a controlled drying space to preserve aroma, colour and overall flower quality.