Grand Daddy Purp is the biggest fruit of Ken Estes’ work as a marijuana enthusiast and breeder. Having suffered from pains throughout his whole life, Ken started looking for a smarter natural cure. He found it – it was cannabis. That is how GDP was created. Now, their medicinal strains are highly active against pains, gastrointestinal problems, glaucoma or other problems. All cannabis strains from Grand Daddy Purp are tested by Ken himself, so you may rest assured they work!