If you spend much time shopping around for cannabis strains or products you’ll find that certain names repeat themselves over and over — especially “Kush.” Kush is one of several building-block strains that have been used to breed an entire family of strains and hybrid cannabis chemovars. Typically described as indica-dominant, with a tranquil, relaxing high, kush strains are potent and many people use them to wind down at the end of the day.