Marijuana is a greenish/brownish/grayish mixture of dried, shredded leaves, stems, seeds, and flowers of the hemp plant. The terms cannabis or marijuana generally refer to the dried flowers and subtending leaves and stems of the female cannabis plant. This is the most widely consumed form, containing 3% to 22% THC.
These are hemp plants, that are grown.
K2 is made up of a mix of different herbs sprayed with a mix of psychotropic chemicals. Synthetic cannabinoids are the common ingredient. JWH-018 is a new synthetic cannabinoid created by scientists to test receptor function in the lab. JWH-018 is chemically similar to THC, the psychotropic ingredient in marijuana.