If you are looking for a plant that gives you vibrant flowers, amends your soil, it's great in the compost pile, all parts are edible, it's nutritious and is a food dye, then look no further! Butterfly pea flower is a plant native to tropical Asia known for its vibrant blue or purple flowers, which are used for natural food and drink coloring, as an ingredient in herbal teas, and for their potential antioxidant properties. The flowers change color from blue to purple or pink when the pH of a liquid changes, making them popular for creative drinks and cocktails. The plant itself is a vining perennial that is also used in traditional medicine and can improve soil quality as a legume