From the lab panel — 20% THC, <2% CBD. From grower reports — 700g/m2 yield, earthy/sweet dominant in cured flower. moderate grow.

Original Harvest Seeds lists this at $29.88 — below the median of $39.83 across 13 listings. Pack options: 3-seed at $29.88, 5-seed at $44.99, plus larger sizes.

Lineage: Afghani × Skunk, weighted 70% indica, is what makes Critical Mass one of the more straightforward heavy-hitters in the feminized catalog. At 20% THC and a 7–9 week flower window, it doesn't ask much in exchange for the kind of output—around 700g/m²—that most growers only see after several seasons of dialing in a room. The earthy, sweet smoke is nothing flashy, but it finishes clean and hits with a reliable body-forward effect that eases into genuine sedation. Both indoor and outdoor runs work well here; the indica backbone keeps stretch manageable and the structure dense without demanding constant intervention. Moderate difficulty means you'll want some basic feeding discipline and good airflow to keep those heavy colas from holding moisture, but it's not a strain that punishes small mistakes harshly.

Best suited for intermediate growers chasing repeatable commercial-scale harvests without the learning curve of more temperamental genetics.

Genetics & Lineage

Critical Mass traces its genetics to 70% Indica / 30% Sativa (Original Harvest Seeds). This hybrid-dominant feminized seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Original Harvest Seeds, 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 20%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Critical Mass delivers THC levels of 20%, 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

Critical Mass 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 7-9 weeks with yields of 700g/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 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 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?

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 from Seennabis?

When you purchase Critical Mass through Seennabis, you are buying directly from Original Harvest Seeds — Catalog of original feminized and autoflower hybrids — clean genetics, stable phenotypes, designed for repeatable harvests across indoor and outdoor setups. Every order includes verified genetics, discreet shipping, and responsive seller support.