Taro is a tuber plant, which is usually planted as an annual crop. Its spherical underground stem is edible and medicinal, and it is the traditional staple food of Oceania islands. Taro leaves are shield-shaped, and petioles are long and fat, usually green or purplish red. Its base forms a short stem, gradually accumulates nutrients and hypertrophy into fleshy bulbs, which are called "taro" or "mother taro". It grows in a high-temperature and humid environment, has the characteristics of aquatic plants, and can be cultivated in paddy fields or dry land.