Quick read: 18-25% THC, 100-170cm mature height, 8-10 weeks bloom. Genetics: Green Poison F1 Fast Feminised (Seedsman genetics). Difficulty: moderate.

Lineage: this one traces back to Seedsman's F1 Fast breeding program, pushing a well-known earthy-sweet cultivar into a shorter flowering window without gutting the cannabinoid numbers. Lab panels on finished flower consistently land in the 18–25% THC range, which puts it solidly above mid-tier without veering into the anxiety-inducing highs some high-THC cuts produce. Indoors, growers are pulling 400–550 g/m² in the 8–10 week flower window — quick enough to squeeze an extra cycle into a Canadian winter season if your setup runs tight.

The flavour profile stays grounded: expect damp soil, a hint of pine, and a mild sweetness on the exhale rather than anything candy-forward. It's rated moderate difficulty, meaning phenotype variation is manageable but you'll want consistent VPD control during late flower to keep mould pressure down. Works in both indoor and outdoor environments.

Best suited to growers who want respectable yields and reliable potency without committing to a long flower run.

Genetics & Lineage

Green Poison F1 Fast Feminised traces its genetics to Green Poison F1 Fast Feminised (Seedsman genetics). 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 Seedsman, 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 25%, this is a potent strain recommended for experienced users — newcomers should start low and go slow.

THC Level & Potency

Green Poison F1 Fast Feminised delivers THC levels of 18-25%, placing it in the high-potency category alongside powerhouses like Gorilla Glue and Girl Scout Cookies. 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 Poison F1 Fast Feminised

Green Poison F1 Fast Feminised 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 8-10 weeks with yields of 400-550g/m². Plants typically reach 100-170cm indoors. Standard training techniques like topping and LST will help manage height and improve light penetration. 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 dense flower formations.

Flavor, Aroma & Terpene Profile

Green Poison F1 Fast Feminised 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 Poison F1 Fast Feminised 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 Poison F1 Fast Feminised?

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 Green Poison F1 Fast Feminised from Seennabis?

When you purchase Green Poison F1 Fast Feminised through Seennabis, you are buying directly from Seedsman — One of the world's largest cannabis seed catalogs, carrying 4,000+ strains from 100+ breeders since 2003. Every order includes verified genetics, discreet shipping, and responsive seller support. Seedsman has completed over 185 sales.