What is the difference between CBD from hemp and CBD from cannabis?

Hemp-derived CBD is sourced from industrial hemp plants, which are grown primarily for their oils, fiber and seeds. Hemp plants tend to differ from cannabis plants in appearance; they are often tall and skinny, scarce in foliage. The U.S. Government now indicates that hemp is differentiated from cannabis by its levels of THC, the cannabinoid that possesses intoxicating properties. Under U.S. law, a hemp plant and its extracts must contain no more than 0.3% THC.