Quick read: 18-25% THC, 100-170cm mature height, 8-10 weeks bloom. Genetics: GMO FAST (Seedsman genetics). Difficulty: moderate.

Lineage: GMO FAST traces back to Seedsman's own cut of the GMO line, selectively bred to shorten the finish without gutting the potency. Lab panels on this one consistently land in the 18–25% THC range — meaningful headroom between the low and high end depending on how hard you push your feed program. The fast-flower trait cuts the typical GMO timeline down to 8–10 weeks from flip, which matters if you're running back-to-back cycles or squeezing a late outdoor harvest before September temperatures drop in Ontario or BC. Indoors or out, feminized plants are pulling 500–650 g/m² under dialled conditions. Expect a damp, earthy nose with a quieter sweet note underneath — not a fruit-forward profile, more soil and funk. Difficulty is moderate, so first-timers may want a run or two under their belt before tackling it.

Best suited to intermediate growers who want GMO's characteristic effect profile without committing to a longer photoperiod schedule.

Genetics & Lineage

GMO FAST traces its genetics to GMO FAST (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

GMO FAST 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 GMO FAST

GMO FAST 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 500-650g/m². Plants typically reach 100-170cm 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

GMO FAST 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, GMO FAST 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 GMO FAST?

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 GMO FAST from Seennabis?

When you purchase GMO FAST 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.