Cannabis (often incorrectly referred to as Marijuana) has many different strains and is classified based on the amount and variety of cannabinoids and terpenes that it contains. They also fit within three categories of Sativa, Indica, and Ruderalis. Only the female plants are grown to full maturity and harvested at the end of the season. Some Cannabis strains are quite high in Tetrahydrocannabinol (THC) while others have only trace amounts and are classified as Hemp. With a near identical appearance, it is difficult to differentiate without lab testing. Hemp is legally grown under the 0.3% limit and does not cause psychoactive effects. It is extracted for Cannabidiol (CBD), as well as grown for it's seeds and fibers that are used in a wide variety of crucial resources from health foods to building materials and textiles. Hemp is an incredibly versatile supercrop and has been a catalyst for some of the earliest innovations.