Rainbow Auto Seeds

Genetics & effects

Rainbow Auto is a feminised autoflower described as Rainbow crossed with ruderalis, although its exact lineage remains uncertain. Its balanced profile is listed as 50% sativa and 50% indica. THC may reach up to 18%, while CBD is listed at up to 1%. Actual cannabinoid levels vary with the individual plant, environment, timing and post-harvest handling.

The flavour profile leans towards sweet fruit, candy and pineapple. Depending on phenotype and growing conditions, plants may also show appealing colour as flowering progresses. Experiences are subjective, but some consumers describe Rainbow Auto as uplifting, energetic or focus-friendly, sometimes accompanied by tingly or arousing sensations. Intensity and character can differ between individuals and occasions.

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

Its autoflowering habit and beginner-friendly rating can suit growers looking for a relatively quick, compact cycle. Rainbow Auto may adapt to hot, dry areas, temperate districts and cooler regions with short summers. Autoflowers begin flowering according to age rather than a change in daylight hours, so steady early growth is useful. Browse more autoflower seeds for comparable options.

In New Zealand, outdoor spring planting generally falls between September and November. Local frost dates, rainfall, wind exposure and daylight intensity should guide the exact timing. Choose an airy position with good light and free-draining soil. In humid areas, spacing plants well and keeping dense foliage dry can reduce the risk of mould.

Indoor

Indoors, Rainbow Auto may reach up to 120 cm. A stable light schedule, gentle airflow and enough root space can support an even canopy. Because autoflowers have limited time to recover from stress, simple methods are often preferable to heavy pruning. Low-stress branch positioning may help light reach lower flowering sites without slowing the plant excessively.

• Flowering period: approximately 8–10 weeks
• Indoor height: up to 120 cm
• Indoor yield: up to 500 g/m²
• Difficulty: beginner

These figures are reference points rather than assured outcomes. Equipment, plant health, skill, phenotype and environmental consistency all influence the final result.

Outdoor

Outdoors, plants may grow to around 150 cm and can suit containers, sheltered courtyards or sunny garden positions where appropriate. Protection from strong spring winds can help young plants establish. During flowering, monitor prolonged rain and humidity, especially around thick flower clusters. Good airflow, clean tools and careful removal of damaged material can reduce risk.

Potential outdoor yield is listed at up to 600 g per plant under favourable conditions. Cooler districts may benefit from an early spring start in a protected setting before plants are moved into stronger light. Avoid abrupt environmental changes, and ensure containers drain freely after heavy rain.

Harvest

New Zealand’s usual outdoor harvest window is March to May, though an autoflower started in spring may finish earlier depending on its full life cycle. Assess flower maturity plant by plant rather than relying only on the calendar. Aroma, resin development and the changing appearance of floral hairs can provide useful visual cues.

After cutting, maintain gentle airflow and moderate humidity while flowers dry. Slow, even drying helps preserve Rainbow Auto’s sweet, fruity and pineapple-led character, making it a colourful candidate for growers seeking a fast-finishing favourite.