Coastal Genetics runs this as a hybrid autoflower line — 22% THC lab range, earthy/sweet-dominant terps, 6-7 weeks from flip.

Coastal Genetics lists this at $30.94 — below the median of $39.83 across 13 listings. Pack options: 3-seed at $30.94, 5-seed at $44.99, plus larger sizes.

Lineage: Critical Mass Auto traces back through cookie/cake/runtz ancestry, with Coastal Genetics leaning hard into the indica side — 70% — to produce a plant that finishes in 6 to 7 weeks from seed without a light schedule change. That fast turnaround doesn't sacrifice much at the scale; growers running this indoors report harvests pushing toward 600g/m², which is a serious number for an autoflower.

At 22% THC with minimal CBD, the effects sit on the heavier, more sedating end — earthy and sweet on the nose, relaxing in the body. Plants top out around 100–160cm, manageable in tight tent setups or outdoor plots. Coastal Genetics bred this with mold resistance in mind, so humid climates don't knock it out the way they would a less robust variety. Moderate difficulty means you'll want a grow or two under your belt before tackling it, but experienced beginners shouldn't shy away.

Genetics & Lineage

Critical Mass Auto traces its genetics to 70% Indica / 30% Sativa (Coastal Genetics). This hybrid-dominant autoflower seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Coastal Genetics, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and euphoric effects, making this strain ideal for evening use and unwinding after a long day. The body-centered stone builds gradually, easing tension and promoting deep physical relaxation. With THC levels reaching 22%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Critical Mass Auto delivers THC levels of 22%, placing it in the moderate-to-strong range that most regular consumers find comfortable. CBD content is minimal, so the psychoactive effects are front and center. The onset typically arrives within minutes with a balanced head-and-body experience that evolves over time.

Growing Critical Mass Auto

Critical Mass Auto is rated as moderate difficulty, making it suitable for growers with some experience. Basic knowledge of nutrient schedules, pH management, and environmental controls will help maximize results.

Indoor Growing: Expect a flowering time of 6-7 weeks with yields of 600g/m2. Plants typically reach 100-160cm indoors. This strain responds exceptionally well to SCROG (Screen of Green) and LST (Low Stress Training), which can boost yields significantly. Maintain temperatures between 68-80°F with relative humidity around 45-55% during flowering.

Outdoor Growing: This versatile strain performs well in both indoor and outdoor environments. Outdoor growers in warm climates can expect harvest from late September through October. Watch for humidity during late flowering to prevent bud rot, especially with the dense, heavy buds this strain produces.

Flavor, Aroma & Terpene Profile

Critical Mass Auto features a earthy, sweet terpene profile that develops complexity throughout the flowering cycle. A smooth, candy-like sweetness defines the flavor, with subtle complexity on the exhale. The aroma intensifies significantly during the final 2-3 weeks of flowering — carbon filtration is recommended for indoor grows requiring discretion.

Medical Benefits

While individual experiences vary, Critical Mass Auto is commonly reported to help with stress relief, chronic pain, insomnia, and muscle tension. The deeply relaxing effects make it a popular choice among medical users seeking nighttime relief. As with any cannabis strain, start with a low dose and increase gradually. Consult a healthcare professional before using cannabis for medical purposes.

Who Should Grow Critical Mass Auto?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Critical Mass Auto from Seennabis?

When you purchase Critical Mass Auto through Seennabis, you are buying directly from Coastal Genetics — California coastal craft breeder. Every order includes verified genetics, discreet shipping, and responsive seller support.