Black Jack brings together dense, frosty flowers, a rich citrus-pine profile, and a soothing yet clear-headed effect. With 55% indica and 45% sativa genetics, this feminized hybrid pairs deep body relaxation with a bright lift in mood and focus. Its fast 8–10-week flowering window and high yields make it a standout for growers seeking premium harvests.
Our breeders created Black Jack by crossing Black Domina with Jack Herer. The result draws on two celebrated lines: Black Domina’s compact, indica-driven strength and Jack Herer’s lively, uplifting character. The combination delivers sturdy plants, abundant resin, and balanced hybrid effects.
Crack open a cured bud and expect a lively rush of citrus and pine, rounded by sweet notes and a warm, woody finish. The smoke is smooth and full-bodied. Rock-hard flowers develop a sparkling coat of trichomes that makes Black Jack especially appealing to resin lovers.
With THC levels of 15–19%, Black Jack offers medium potency and a steady, approachable experience. Expect a happy, relaxed mood with a gentle mental lift, followed by a comfortable body calm. Many growers and consumers favor its easygoing character for unwinding in the evening.
Caryophyllene, humulene, linalool, myrcene, and alpha-pinene shape Black Jack’s layered aroma. Their mix brings spicy, floral, earthy, and fresh pine accents to the citrus-sweet profile. Enjoy its balanced character during a quiet evening, a creative session, or a relaxed gathering.
These feminized seeds are bred to produce female plants, helping growers focus their space and care on flower production. Black Jack suits indoor and outdoor gardens, and its manageable flowering period rewards patient cultivation with resin-rich buds. Every Grassfarmer order comes with a germination guarantee.
Give seedlings a clean start with a quality, well-draining medium such as coco coir, peat, or a suitable potting mix. Keep conditions steady as plants establish, and provide balanced nutrition as they move from seedling growth into vegetation. Black Jack is considered beginner-friendly, while thoughtful early care helps set up an even canopy.
Black Jack grows with a sturdy central stem and supportive side branches, reaching around 1.5 m (4.92 ft). Indoors, a ScrOG setup can help spread the canopy and bring more lower growth into the light. Maintain good airflow, monitor humidity as flowering progresses, and inspect plants regularly for pests.
Expect flowering in 8–10 weeks indoors. Under suitable outdoor conditions, plants are typically ready for an October harvest. Indoor yields reach around 450–500 g/m², while outdoor plants can produce approximately 200–450 g each. Temperate climates and plenty of sunshine help this high-yielding variety show its full potential.
Choose Black Jack for its bold flavor, generous resin, and rewarding harvest potential. Grassfarmer offers premium genetics in small and bulk quantities, with fast, discreet shipping and guaranteed delivery in the USA, Canada, the European Union, and the U.K. Order with confidence, backed by our germination guarantee.
