Black Jack is a marijuana strain that produces hard buds with huge, grape-like calyxes that are completely encrusted with THC. The taste is heavy and flavorful and the strain produces exceptionally long-lasting effects. Because of its high THC levels, Black Jack is popular among medical marijuana patients. Although there is a mild body high, this strain, like Jack Herer, strikes a very good balance between cerebral and physical effects. Black Jack is appropriate for daytime use for users looking to complement daily activities or possibly exercise routines.Trippy psychedelic and physical relaxation, what’s not to love?