Granddaddy Purple is an indica marijuana strain a famous indica cross of Mendo Purps, Skunk, and Afghanistan. Its potent effects are clearly detectable in both mind and body, delivering a fusion of cerebral euphoria and physical relaxation. While your thoughts may float in a dreamy buzz, your body is more likely to find itself fixed in one spot for the duration of GDP’s effects. Granddaddy purple helps to relieve pain, stress, insomnia, appetite loss, and muscle spasms.