XJ-13 Seeds

Genetics & effects

XJ-13 is a feminised Jack Herer × G13 cross presented in the Kiwi Seed Bank catalogue. Its 60% sativa and 40% indica profile combines vigorous growth with a balanced structure. THC is listed at 15–22%, while CBD is listed at 0–0.5%.

The aromatic profile brings together earthy, fruity and sweet notes with brighter citrus, pine and mint accents. Terpinolene, pinene and caryophyllene shape its fresh, layered character. Individual experiences vary, but XJ-13 may feel energetic, creative, talkative and happy. Some people may find its lively character better suited to social or imaginative settings than quiet evenings.

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, XJ-13 is best matched with warm, dry or temperate conditions. Its intermediate difficulty level makes it more suitable for growers who are comfortable managing plant height, airflow and nutrition. Spring planting generally falls between September and November, although local temperatures and frost patterns should guide timing.

Because conditions differ across Aotearoa, growers should account for their own microclimate. Warmer northern areas may offer a longer outdoor season, while cooler or wetter districts can require greater shelter and closer moisture management. Good spacing, airflow and protection from prolonged rain can reduce the risk of mould as flowers become denser.

Indoor

Indoors, XJ-13 can reach up to 150 cm and flowers in approximately 9–10 weeks. Its sativa-leaning stretch benefits from early canopy planning. Low-stress training, topping and a screen can help distribute growth across the available area, while maintaining space between branches supports light penetration and airflow.

Indoor yields are listed at up to 650 g/m² under suitable conditions. Stable temperatures, balanced feeding and consistent ventilation are important throughout flowering. As aromatic intensity increases, carbon filtration may be a useful part of the room setup. Check flowers regularly and avoid excessive humidity late in the cycle.

Outdoor

Outdoors, plants may grow up to 190 cm, so choose a sunny position with enough room for lateral branching. A well-draining medium is especially valuable in regions where spring or autumn rain is common. Support stakes or netting can help hold heavier branches as flowers develop.

Outdoor yields are listed at up to 800 g per plant in favourable conditions. These figures are best viewed as cultivation targets rather than expected outcomes, as weather, plant care, container size, soil quality and seasonal timing all influence performance.

Harvest

New Zealand’s main outdoor harvest window is March–May. Monitor flower maturity rather than relying only on the calendar, particularly in cooler districts or during unsettled autumn weather. Indoor plants are typically ready after their 9–10-week flowering period.

At harvest, careful handling helps retain the strain’s sweet citrus, pine, mint and earthy character. Dry branches slowly in a dark, ventilated space with steady environmental conditions, checking regularly for excess moisture. Once evenly dry, store flowers in clean, sealed containers away from heat and direct light.