Granddaddy Purple, also known as Grandaddy Purp or GDP, is a hybrid that was first propagated in Northern California in 2003 by breeder Ken Estes. A cross between Purple Urkle and Big Bud, GDP was then backcrossed into itself. GRANDDADDY PURP / HYBRID · Taste: Sweet, Fruity, Grape · Feeling: Happy, Relaxed, Giggly · Description: A California staple born from parent plants Purple Urkle and Big Bud, Granddaddy Purp is a heavily indica-dominant hybrid that delivers a familiar euphoria.