Burdock root belongs to the family of thistle and it grows in damp soil all over North America and England. It is a very healthy root, being a good source of potassium, and a moderate source of iron and calcium. Other nutritional values include a high content in magnesium, vitamins, and minerals as well. It is used in spring for 'spring cleaning', by consuming in the form of tea, after eating a lot of high-fat and high-protein food in winter.