THCa FLOWER – THCa (Tetrahydrocannabinolic Acid) is the precursor to THC (Tetrahydrocannabinol), the psychoactive compound in cannabis. THCa is found in raw, unheated cannabis plants and does not produce psychoactive effects. When exposed to heat through processes like smoking or vaping, THCa decarboxylates into THC, becoming psychoactive and producing the well-known “high” associated with cannabis consumption.