Granddaddy Purple, a cross of Purple Urkel with Big Bud, California loves its purple cultivars and GDP is a staple in classic purple cultivars. Created almost 20 years ago in San Francisco, Granddaddy Purple has been a solid choice for smokers far and wide. Almost identical to its cousin Grape Ape, GDP has an overwhelming grape-ness to it, with a spicy, earthy undertone. A powerful cultivar, GDP hits the body and mind equally relaxing, euphoric and mildly sedative.