The Bittergreen plant is a vegetable that grows in the Red Mountain Region. The vines have red flowers when in bloom. Bittergreen is poisonous when eaten raw, but is safe to eat and nourishing when it is boiled. Due to its toxic effect when raw, it is often used in poisons, such as the poison Hanin's Wake. From this plant, Bittergreen Petals are obtained, which is used in Alchemy.