Compare Black Rainbow with more feminised cannabis seeds, browse grapefruit cannabis strains, or read the PrimeStrains genetics journal.
Black Rainbow is a feminised cross that blends Watermelon Zkittlez and Bacio Rainbow with Apollo Black Cherry, producing an indica-leaning plant suited to both indoor and outdoor cultivation. Its flowering window runs from eight to nine weeks, which keeps the wait short for gardeners who enjoy a quick turnaround. The flowers offer a bright, citrus-led scent that gradually shifts into berry and grape tones. On the palate expect sweet, fruity notes layered over an earthy, kush-style base, with spicy and peppery accents and a hint of diesel. Stated THC levels sit between 20 and 26 percent. The effect starts with a lively, uplifting lift before settling into calm, full-body relaxation. Growers who want a manageable, intermediate-level project and a distinctive flavour profile will find plenty to enjoy here.