G13 Seeds

Genetics & effects

G13 feminised is an indica-dominant hybrid with a reported 70% indica and 30% sativa profile. Its exact lineage remains uncertain, so it is best understood as a G13-derived selection rather than a precisely documented cross. Plants are typically compact, resinous and vigorous, making this an appealing option for intermediate growers who can maintain a stable environment.

THC is listed at 20–24%, while CBD is listed at 0–0.7%. Individual experiences vary, but the effects are often described subjectively as calming, happy and euphoric, with an uplifting opening that may settle into deep relaxation, hunger or sleepiness. The flavour profile combines sweet berry notes with earthy, woody and pungent skunk character. Myrcene, caryophyllene and limonene are the principal listed terpenes.

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

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

Growing in Australia

G13 is suited to hot, dry and temperate Australian conditions, provided humidity, airflow and watering are managed carefully. As a feminised seed line, it is intended to produce female plants, although natural variation remains possible. Growers should check all rules applying to seed possession and cultivation in their state or territory before proceeding.

For seasonal outdoor cultivation, spring planting generally falls between September and November. Choose a position with abundant direct sun, free-draining soil and protection from severe weather. In warmer districts, afternoon airflow can help manage heat and moisture around the canopy. In cooler temperate areas, select a sunny location and avoid exposed sites where autumn rain may increase mould pressure.

Indoor

Indoors, G13 is listed to reach up to 100 cm, making it practical where vertical room is limited. A flowering period of approximately eight to nine weeks supports relatively quick room turnover. Use an even light footprint, steady air exchange and enough spacing to keep foliage from crowding.

• Difficulty: Intermediate
• Indoor height: Up to 100 cm
• Flowering: Approximately 8–9 weeks
• Listed indoor yield: Up to 600 g/m² in favourable conditions

Gentle canopy shaping can help maintain an even profile, but avoid excessive stress late in the cycle. Monitor moisture at root level and allow suitable drying between irrigation events. See the indoor growing guide for general environmental planning.

Outdoor

Outdoors, plants are listed to reach up to 110 cm and may produce up to 1,000 g per plant in favourable conditions. These figures are reference points rather than assured outcomes; phenotype, sunlight, root space, weather and grower experience all influence performance. Support heavier branches as flowers develop, and maintain an open canopy to reduce the risk of stagnant humidity and mould.

In hot, dry regions, mulch can moderate root-zone temperature and slow rapid moisture loss. In temperate areas, keep an eye on late-season rainfall and inspect dense flowers regularly. More seasonal context is available in the Australian outdoor calendar.

Harvest

For Australian outdoor gardens, harvest commonly falls between March and May, depending on latitude, planting time, phenotype and seasonal conditions. Look for mature flower development rather than relying on dates alone. Pungent earthy and skunk aromas may become more pronounced late in bloom, joined by sweet berry and woody notes. Careful handling and a slow, controlled post-harvest drying period can help retain aroma, colour and overall flower quality.

G13 is presented in the Outback Seed Bank catalogue for growers seeking compact feminised genetics, strong listed potency and a rich, old-school flavour profile.