Grand Daddy Genetics is a renowned cannabis breeding company that has made significant contributions to the cannabis industry. The company was founded by Ken Estes, a veteran medical marijuana activist who has been cultivating cannabis for over 40 years. Grand Daddy Genetics is most famous for their flagship strain, Granddaddy Purple (GDP), which is a potent indica-dominant hybrid known for its grape and berry aroma and relaxing effects. GDP has won multiple awards at cannabis competitions and is considered one of the most popular strains among both medical and recreational users.