Pure Kush 36% ThcaPure Kush: This potent favorite, available on and off the legal market, is a phenotype of OG Kush, a sativa dominant hybrid with THCa levels that can top 36%. Pure Kush definitely carries some of it's parents best genes. It's an indica dominant strain (15: 85 sativa indica ratio), and though its potency varies, it's nearly as strong as its parent: Some tests show THCa levels over 36%, making Pure Kush one of the world's strongest strains. CBD levels,