The Rainbow Haze Cannabis Strain is the potent Sativa-dominant offspring of the Rainbow and Haze strains, both famous in their own right and parents of many different strains. This is a happy hybrid, ideal for daytime use. THC levels frequently measure as high as 20 percent, sometimes more, and it contains plenty of CBD too. Potent, tasty, and with euphoric, uplifting effects, it is extremely popular.