Blue Kush can be classified as Indica or a hybrid, a cross between Blueberry and Building Block OG. This strain of kush has a THC percentage of 18-20% Although and Indica strain there is a slight Sativa kick at the beginning. Euphoric uplift followed by a slightly pain reliving and relaxing sensations. Good strain for those with anxiety, Insomnia, and pain. Not a super heavy Indica but defiantly an interesting one.