Green Crack, also known as "Green Crush" and "Mango Crack," is a potent sativa marijuana strain made by crossing Skunk #1 with an unknown indica. This strain is beloved by many consumers for its energizing effects. But don't let the name fool you: this is pure cannabis. Green Crack has branched into two genetic lineages, the most common of which is its sativa line descended from Skunk #1. The 75% indica variety of Green Crack is said to have come from an Afghani strain, and is marked by a tighter bud structure.