The Granddaddy Purple Auto strain has excellent parentage. It is the autoflowering version of Granddaddy Purple, whose parent strains are Purple Urkle (Afghan x Skunk) and Big Bud Auto (a Mendocino Purps phenotype). Destined for success, this strain offers an indica-dominant profile, with 75% indica genetics, 20% sativa and 5% ruderalis. Granddaddy Purple Autoflowering produces around 19% THC, which together with other phytochemicals causes a strong effect.