Critical Purple Auto brings vivid color, dense resin, and a quick, easygoing grow into one compact package. Expect a sweet citrus-and-earth profile, deeply relaxing indica character, and a fast seed-to-harvest cycle of just 10–12 weeks. With beginner-friendly autoflowering genetics, it’s a standout choice for growers who want striking buds without a complicated schedule.

Our breeders cross Critical Mass and Big Bud with Ruderalis to create a vigorous, mostly indica hybrid: 80% indica and 20% sativa. The result combines a sturdy, productive foundation with automatic flowering and the potential for rich purple hues, especially when temperatures cool late in the grow.

Crack open a cured bud and discover a layered mix of bright citrus, damp earth, and rounded sweetness. Sweet grape and dark berry notes add depth, while a musky, skunky undertone gives the aroma extra character. The smoke is smooth, with a lingering sweet-and-sour finish.

With THC levels listed at 20–24%, Critical Purple Auto delivers a potent, full-bodied experience. The effects begin with a gentle lift in mood, then settle into deep physical relaxation. Creative, energetic, and uplifted notes bring balance to its heavier indica feel, making it a popular pick for laid-back evenings.

Its terpene lineup includes alpha-pinene, beta-pinene, caryophyllene, limonene, linalool, and myrcene. Together, they shape the strain’s citrusy sweetness, earthy depth, and fragrant finish. The resin-heavy flowers also make an appealing option for growers interested in aromatic concentrates.

These autoflowering seeds flower according to age, so there’s no need to change the light schedule to trigger bloom. The full cycle takes about 10–12 weeks from seed to harvest. Critical Purple Auto is rated suitable for beginners, and every Grassfarmer order includes our germination guarantee.

Give seedlings a stable start with quality, well-draining medium and gentle, consistent care. Coco coir, peat-based mixes, or a blend with perlite can support drainage and moisture balance. Indoors, an 18/6 or 20/4 light schedule provides steady illumination through the cycle. Outdoors, choose a sunny site and a season with warm, dependable weather.

The plants grow compact and bushy, with broad leaves and strong lateral branches. They can reach around 4.9 feet (1.5 m), so leave enough room for airflow and a healthy canopy. Keep conditions clean, monitor plants for pests, and avoid overwatering. Stable temperatures and good air circulation help protect dense, resin-coated flowers.

Expect harvest in 10–12 weeks, with medium yields under suitable conditions. Indoor growers can target approximately 300–400 g/m², while outdoor plants may produce around 400–600 g each. The buds can develop a crystalline coating and deep purple coloration as they mature, especially with cooler late-season temperatures.

Bring home Critical Purple Auto from Grassfarmer in small or bulk quantities. Our expert-selected genetics come with fast, discreet shipping and guaranteed delivery in the USA, Canada, the European Union, and the U.K. Add its bold color, rich aroma, and quick cycle to your grow.

Attributes

Climate Temperate
Effects Creative, Energetic, Uplifted
Flavors Citrus, Earthy, Sweet
Genetics 80% Indica / 20% Sativa
Harvest Month All Season
Height 4.92 ft | 1.5 m
Indoor Yield 0.98–1.31 oz/ft² | 300–400 g/m²
Life Cycle 10–12 weeks
Lineage Critical Mass x Big Bud x Ruderalis
Medicinal Fatigue, Muscle Spasms, Stress
Outdoor Yield 14.11–21.16 oz/plant | 400–600 g/plant
Sex Feminized
THC 20%–24% (High)
Terpenes Alpha-Pinene, Beta-Pinene, Caryophyllene, Limonene, Linalool, Myrcene