Granddaddy Purple BX2 (commonly referred to as GDP BX2) is a highly refined, indica-dominant hybrid cannabis strain. The "BX2" designation indicates that the original strain has been backcrossed twice into its own parental lineage. This selective breeding practice is designed specifically to lock in and maximize the most desirable traits of the original landmark cultivar—namely its deep purple coloring, sweet grape flavor, and heavy sedative power