The shortest version: Seedsman's take on hybrid genetics, 18-25% THC, 8-10 weeks flowering, moderate grow.

Lineage: Alien OG sits in Seedsman's catalogue as a feminized cross pulling hard toward OG Kush structure, and the numbers back up the reputation — THC testing lands between 18–25%, with most phenotypes clustering in the 20–22% band under good light. Yields run 400–550 g/m² indoors on an 8–10 week flower cycle, which is a reasonable return for a plant that asks for moderate attention: she rewards consistent feeding but punishes neglect with tip burn and stretch if you let the canopy go unchecked. The aroma profile is diesel-forward with a damp earth base — not fruity, not sweet, so don't expect anything candy-adjacent. She handles both indoor and outdoor setups, though Canadian outdoor growers should aim for a late-September pull to stay ahead of early frost in most provinces.

Best suited to intermediate growers who want a high-THC OG-style plant without the fussiness of some heritage cuts.

Genetics & Lineage

Alien OG Feminised traces its genetics to Alien OG 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

Alien OG 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 Alien OG Feminised

Alien OG 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

Alien OG Feminised features a diesel, earthy terpene profile that develops complexity throughout the flowering cycle. Pungent fuel and chemical notes hit first, followed by an earthy, musky undertone. 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, Alien OG 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 Alien OG 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 Alien OG Feminised from Seennabis?

When you purchase Alien OG 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.