Black Widow Auto Seeds

Genetics & effects

Black Widow Auto is a feminised autoflower seed combining Black Widow genetics with a ruderalis autoflowering lineage. Its profile is approximately 60% indica and 40% sativa, giving it a balanced character with a slightly indica-leaning structure. Plants move into flowering according to age rather than changes in the light cycle, making them a practical choice where space or seasonal time is limited.

THC levels are listed at approximately 15–19%, with CBD around 0.1–0.6%. Individual experiences vary, but the effects may feel cerebral, energetic and notably strong. The aroma and flavour can combine sweet berry and ripe fruit with earthy wood, skunk and fresh pine. Myrcene, caryophyllene and pinene contribute to this layered profile.

Explore autoflower seeds, outdoor seeds, the New Zealand grow guide, and the planting calendar.

Explore autoflower seeds, outdoor seeds, the New Zealand grow guide, and the planting calendar.

Growing in New Zealand

Black Widow Auto suits intermediate growers and can adapt to hot, dry areas, temperate districts and cooler regions with short summers. Its rapid life cycle can be useful in New Zealand conditions, although local weather, soil, container size and grower skill will influence plant performance.

For outdoor cultivation, spring planting generally falls between September and November. Choose the warmest suitable part of the season for your region and provide a sunny, sheltered position with free-draining soil. In wetter districts, good airflow and protection from prolonged rain can reduce the risk of mould around dense flowers.

Indoor

Indoors, plants may reach up to 90 cm, making this variety suitable for compact rooms and tents. A stable environment, gentle air movement and careful humidity control help support healthy growth. Because autoflowers develop on a fixed timetable, avoid unnecessary stress and major changes once growth is underway.

• Flowering time: approximately 8–10 weeks
• Indoor height: up to 90 cm
• Indoor yield: up to 400 g/m²
• Skill level: intermediate

Use a light, well-aerated growing medium and allow the root zone to drain between waterings. Low-stress canopy guidance may help maintain an even shape, while heavy pruning may slow a compact autoflower during its limited vegetative phase.

Outdoor

Outdoors, Black Widow Auto may grow up to 110 cm and can produce up to 210 g per plant in favourable conditions. A container can make it easier to follow the sun or move plants away from severe weather. In exposed coastal or alpine locations, shelter from strong wind and sudden cold is especially useful.

• Outdoor height: up to 110 cm
• Outdoor yield: up to 210 g per plant
• Preferred conditions: sunny, sheltered and well drained

Harvest

New Zealand’s usual outdoor harvest period is March–May, but autoflower timing depends primarily on the plant’s age and chosen sowing date. Check flower maturity rather than relying only on the calendar. Indoor plants can finish at other times of year under a controlled environment. All height, cannabinoid, flowering and yield figures are indicative; actual outcomes vary with conditions and cultivation choices.