Hemp and marijuana are both part of the cannabis family of plants. Cannabis is one of the oldest domesticated plants in history. Whereas hemp plants were cultivated for industrial uses (rope, fiber, textiles), marijuana plants have been cultivated for their psychoactive properties. The main difference between hemp and marijuana is in their genetic background and agricultural environment. Another major difference between hemp and marijuana is in their THC content. Marijuana plants have been bred to produce more potent varieties with high THC content (10-30%), whereas hemp plants have only trace amounts of THC (<0.3%).