THC-A flower refers to raw cannabis that contains tetrahydrocannabinolic acid (THC-A) in its natural form. Unlike traditional THC, which is psychoactive, THC-A is a non-psychoactive compound that converts into THC when exposed to heat through a process called decarboxylation. https://yumzlab.com/collections/thc-a-flower-best-deals-and-highest-potency