The specs in one line: 26% THC, <2% CBD, 7-9 weeks flowering, 450–550 g/m2 reported. Best indoor or outdoor. moderate grow.

Lineage: Triangle Kush × '88 G13 Hashplant, two cuts that have circulated among serious West Coast collectors for decades — Coastal Genetics pressed them into a feminized package called Black Triangle that's worth understanding before you pop a seed.

THC testing settles around 26%, and the terpene profile skews toward pine resin and damp earth with a citrus edge that comes through most clearly in the cure. Flowering wraps in 7–9 weeks, and indoor growers pulling 450–550 g/m² are hitting those numbers at moderate skill — not beginner territory, but nothing that requires a grow room technician either. Plants stay compact enough to manage canopy without heavy training, though the feeding curve on the G13 side asks for some attention during mid-flower. The indica lean means effects run toward physical relaxation and weight behind the eyes, so plan your sessions accordingly.

Best suited for growers who want a shorter-cycle indica with genuine heritage behind it rather than a marketing story.

Genetics & Lineage

Black Triangle traces its genetics to Triangle Kush x '88 G13 Hashplant (Coastal Genetics). This indica-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 Coastal Genetics, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and euphoric 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 26%, this is a potent strain recommended for experienced users — newcomers should start low and go slow.

THC Level & Potency

Black Triangle delivers THC levels of 26%, 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 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing Black Triangle

Black Triangle 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 7-9 weeks with yields of 450–550 g/m2. Plants typically reach 60-100cm 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 40-50% 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

Black Triangle features a citrus, earthy, pine, 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, Black Triangle 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 Black Triangle?

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 Black Triangle from Seennabis?

When you purchase Black Triangle through Seennabis, you are buying directly from Coastal Genetics — California coastal craft breeder. Every order includes verified genetics, discreet shipping, and responsive seller support.