Blackberries are native to Europe, but farmers grow them across the United States all year round. They come from brambles, which are a type of thorny bush. They are also packed with essential nutrients and antioxidants. Blackberries contain a high level of vitamin C; one serving of 100 grams (g) contains 35 percent of an individual’s recommended daily allowance (RDA) of vitamin C. A 100 g serving of blackberries contains 14 percent of the RDA of fiber. Blackberries contain high levels of antioxidants, such as anthocyanins. Antioxidants help people to fight against the adverse impact of free radicals in the body. Blackberries are an excellent source of vitamin K; this is a necessary nutrient for blood clotting, which is essential for proper wound healing. Blackberries also contain vitamin A, which serves several functions in the body. Vitamin A supports the immune system, which combats infections and illness; it also supports the growth and maintenance of teeth and bones, as well as keeping skin healthy.