Tetra Express Auto Seeds

Genetics & effects

Tetra Express Auto is a feminised autoflower presented in the Outback Seed Bank catalogue. Its reported lineage combines Tetra Express with ruderalis-derived autoflowering genetics. The finer ancestry and exact sativa-to-indica balance are uncertain, although it is commonly described as an approximately balanced hybrid.

Reported THC levels range from 20% to 32%, with CBD listed below 1%. Potency varies with phenotype, environment, harvest timing and post-harvest handling, so these figures are best viewed as a guide rather than a promise. Individual experiences may also differ. Some people describe the effects as initially happy, uplifting or euphoric, followed by a relaxed, weightier or “stoned” sensation.

The flavour profile may combine sweet, earthy and fruity notes with citrus and lemon accents. Limonene, myrcene and caryophyllene are among the associated terpenes, potentially contributing brightness, depth and light spice to the aroma.

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

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

Growing in Australia

This autoflower is rated for intermediate growers and may suit hot, humid, hot, dry and temperate Australian climates when local conditions are managed carefully. Autoflowering plants progress according to age rather than a seasonal light change, making stable conditions especially important during their short life cycle.

For outdoor cultivation, spring planting generally falls between September and November. Select timing according to local temperatures, daylight and rainfall rather than the calendar alone. In humid areas, airflow and shelter from prolonged rain can help reduce mould risk. In hot, dry regions, mulch, sensible irrigation and afternoon shade during severe heat may help limit stress. Always check the rules that apply in your state or territory before germination or cultivation.

Indoor

Indoors, Tetra Express Auto may reach up to 120 cm and is reported to produce up to 500 g/m² under favourable conditions. These are catalogue estimates, not guaranteed outcomes. A light, well-aerated medium and consistent environment suit its rapid growth pattern.

• Use gentle low-stress canopy shaping rather than major late-cycle work.
• Maintain good air movement around foliage and flowers.
• Avoid overwatering and abrupt changes in light, nutrition or temperature.
• Allow enough vertical room for the flowering stretch.

Outdoor

Outdoor plants may grow up to 160 cm, with reported yields of up to 650 g per plant in favourable settings. Choose a sunny, discreet position with free-draining soil and access to airflow. Because autoflowers have limited time to recover from setbacks, early root development and steady moisture are priorities.

Regional conditions differ greatly across Australia. Coastal humidity, tropical rain, inland heat and cool southern nights each require a different approach. Inspect flowers regularly as they gain density, particularly after rain or during extended damp weather.

Harvest

The listed flowering period is approximately 8–9 weeks, although the full seed-to-harvest cycle can be longer. Outdoors, Australia’s broader harvest season is typically March–May, but autoflowers started in spring may finish earlier depending on sowing date and local weather.

Assess maturity from overall flower development and trichome appearance rather than relying only on elapsed time. Harvest estimates, plant size, cannabinoid content, colour and aroma can all vary between phenotypes and growing environments. For more options, browse the autoflower seed collection or view feminised seeds.