Critical Jack Auto Seeds

Genetics & effects

Critical Jack Auto brings together Jack Herer, Critical and ruderalis genetics in an autoflowering format. Its listed balance is 60% sativa and 40% indica, with THC of 12–15% and CBD of 0.1–0.2%. The aromatic profile layers pine, lemon and floral notes over sweet spice and pepper, reflecting prominent limonene, pinene and caryophyllene.

Individual experiences vary, but some people describe the effects as initially euphoric and creative before settling into a relaxed, physically calming feel. The combination may be appealing to those who enjoy bright citrus and pine flavours alongside a softer, spicy finish. Personal experience can differ according to the individual and setting.

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

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

Growing in New Zealand

Presented by Kiwi Seed Bank, Critical Jack Auto is positioned as a beginner-friendly choice for growers seeking a short, straightforward cycle. Autoflowering plants begin flowering according to age rather than a change in daylight hours, making timing more predictable. The listed flowering period is approximately 8–9 weeks, although the full seed-to-harvest cycle may be longer.

In New Zealand, spring planting falls from September to November, while the traditional outdoor harvest season is March to May. Autoflowers started in spring may finish earlier than photoperiod plants, depending on sowing date, local conditions and plant development. Check the rules that apply in your location before germinating or cultivating cannabis seeds.

Indoor

Indoors, plants are listed at around 80–140 cm, making them manageable in rooms with moderate vertical space. Gentle low-stress shaping can help open the canopy, but heavy intervention may slow a fast-growing autoflower. A steady light schedule, good air movement and careful watering support even growth.

Indoor yields are listed at up to 350 g/m² under favourable conditions. Keep humidity controlled as flowers gain weight, and allow enough space between plants to improve airflow and reduce the risk of mould. Browse more autoflower seeds if a compact life cycle is your favourite cultivation style.

Outdoor

Outdoors, Critical Jack Auto is listed to reach up to 150 cm and may suit hot, dry, temperate or cool, short-season conditions. Choose a sunny position with free-draining soil and shelter from severe wind. In wetter parts of New Zealand, monitor rainfall and flower density closely, particularly later in the cycle.

Potential outdoor production is listed at up to 450 g per plant. Actual height, colour, aroma and output depend on sunlight, root space, nutrition, weather and grower experience. Containers can make it easier to move plants away from prolonged rain or unusually cold conditions.

Harvest

Use plant maturity rather than the calendar alone when assessing readiness. During New Zealand’s March–May harvest period, inspect flowers regularly and watch for natural swelling, fading pistils and changing trichome appearance. Handle ripe flowers carefully to preserve their lemon, pine, floral, sweet and pepper character. All times, dimensions and yields are estimates rather than assured outcomes.