. The popular indica BC Grapefruit out of Canada was merged with the sativa Super Silver Haze to create this effective hybrid. The exact ratio of sativa to indica isn't widely reported, but the effects suggest the sativa genes won out. The high is primarily cerebral, with euphoria, a boost of energy, and a shot of creativity. The giggles are also common when using this strain. THC levels are relatively modest, topping 16-25% in available tests, so this is a good choice for part-time tokers and newcomers. Anxiety, depression, insomnia, migraines, and other headaches are among the best medical uses for Grapefruit Haze.