Maybe it’s related to one of the other 83 cannabinoids we know so little about. In 2018, President Donald Trump signed the Agricultural Improvement Act, which loosened restrictions on the use of hemp products that contain less than .3% THC. THC is the psychoactive component found in marijuana – the chemical that produces a high when smoked or ingested. Different strains produce different ratios of CBD, some featuring less than 0.3 percent of psychoactive THC while others feature around the same amount of both cannabinoids. High-CBD cannabis flower is typically sold at medical and recreational cannabis dispensaries, though, some online retailers may ship hemp CBD flower to your door.