Mulberry bark comes from the mulberry tree, a deciduous tree known for its sweet berries. The bark is typically harvested from the inner layer, which is soft and fibrous. It has been used in traditional medicine and crafts for centuries, particularly in Asian cultures. In addition to its medicinal uses, mulberry bark is also valued for its strong fibers, which can be used to make paper and textiles. The bark is rich in nutrients and has antioxidant properties, making it a popular ingredient in herbal remedies and health supplements.