Seedsman runs this as a sativa feminized line — 18-25% THC lab range, pine/earthy-dominant terps, 10-12 weeks from flip.

Lineage: Jack Herer and AK-47 sit behind this feminized fast-flowering sativa, and that pairing shows up clearly in both the growth pattern and the finished product. THC lands in the 18–25% range depending on environment and finishing conditions, while the flavor profile stays grounded — expect pine and earth, not candy or tropical notes. Flowering wraps in 10–12 weeks, which is on the shorter side for a sativa-leaning plant and makes it a reasonable option for growers who want that upright, energetic character without a long wait. Yields run 400–550g/m² indoors under solid light, and the strain handles both indoor and outdoor setups without issue. Difficulty is moderate, so first-timers may find it forgiving enough, but getting the most from that yield ceiling will take some dialing in.

Best suited to growers who want a daytime-type sativa with manageable flowering time and don't mind putting in a little extra attention on the feed schedule.

Genetics & Lineage

Jack 47 F1 Fast Feminised traces its genetics to Jack 47 F1 Fast Feminised (Seedsman genetics). This sativa-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 energetic and creative effects, making this strain perfect for daytime use, creative projects, and staying productive. The cerebral lift arrives quickly, sharpening focus and inspiring motivation. With THC levels reaching 25%, this is a potent strain recommended for experienced users — newcomers should start low and go slow.

THC Level & Potency

Jack 47 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, starting as a cerebral buzz that gradually expands.

Growing Jack 47 F1 Fast Feminised

Jack 47 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 10-12 weeks with yields of 400-550g/m². Plants typically reach 120-200cm 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

Jack 47 F1 Fast Feminised features a pine, earthy terpene profile that develops complexity throughout the flowering cycle. Sharp forest and resin notes create a fresh, invigorating flavor with earthy depth. 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, Jack 47 F1 Fast Feminised is commonly reported to help with depression, fatigue, lack of motivation, and ADHD symptoms. The uplifting, focusing effects make it popular among medical users seeking daytime functionality. 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 Jack 47 F1 Fast Feminised?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you need a daytime boost for creativity and sustained focus, look no further.

Why Buy Jack 47 F1 Fast Feminised from Seennabis?

When you purchase Jack 47 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.