Granddaddy Purple (or GDP) is a famous indica cross between Purple Urkle and Big Bud. This California staple inherits a complex grape and berry aroma from its Purple Urkle parent. Its potent psychoactive effects are clearly detectable in both mind and body, delivering a fusion of cerebral euphoria and physical relaxation. Like most heavy indica varieties, Granddaddy Purple is typically pulled off the shelf to treat pain, stress, insomnia, appetite loss, and muscle spasms.