Spec sheet first — strain: hybrid, seed type: autoflower, THC: 16-20%, yield band: high, environment: indoor or outdoor.

Lineage: Ruderalis crossed with Moroccan landrace, White Dwarf, and Low Rider — a combination that keeps the plant compact and the cycle short without sacrificing much weight. Green House Seeds developed this one to finish in 9–10 weeks total from seed, making it a practical fit for Canadian outdoor growers who need to wrap up before the first hard frost. Indoor runs regularly pull 500–700 g/m² when light schedules and feeding are dialed in, which is a solid number for an autoflower at this price point. THC sits in the 16–20% range — enough for a lasting, body-leaning effect that hits faster than the percentage might suggest. The flavour profile stays honest: earthy soil notes with a mild sweetness on the exhale, nothing sharp or polarizing. Difficulty is low, so it won't punish beginners who are still working out their feeding rhythm.

Genetics & Lineage

Green-O-Matic traces its genetics to Green-O-Matic (Green House Seeds 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 Greenhouse Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily euphoric and relaxed 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

Green-O-Matic delivers THC levels of 16-20%, 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 Green-O-Matic

Green-O-Matic is rated as easy difficulty, making it an excellent choice for first-time growers. The plants are resilient, forgiving of common mistakes like overwatering or inconsistent feeding schedules.

Indoor Growing: Expect a flowering time of 9-10 weeks total with yields of 500-700g/m2. Plants typically reach 60-120cm 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

Green-O-Matic 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, Green-O-Matic 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 Green-O-Matic?

This strain is ideal for beginner growers looking for a reliable, low-maintenance plant that delivers consistent results without advanced techniques. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Green-O-Matic from Seennabis?

When you purchase Green-O-Matic through Seennabis, you are buying directly from Greenhouse Seeds — Renowned Strain Hunters founded by Arjan Roskam, 'The King of Cannabis'. Every order includes verified genetics, discreet shipping, and responsive seller support. Greenhouse Seeds has completed over 92 sales.