The sweet potato, Ipomoae batatas, a member of the morning glory family, Convovulaceae, is grown for its tuberlike roots. Native to the American tropics, it is rich in vitamin A. Europeans brought back the plant to their continent in the 16th century, and it was later grown in Asia. About 4 to 5 months of warm weather are required for adequate yieldss. All varieties have long vines, often exceeding 3 m (10 ft). Most sweet potatoes are propagated by planting root sprouths or vine cuttings. Properly stored, roots can remain edible for 6 to 7 months.
The sweet potato plant, native to the Americans, is cultivated in temperature and tropical regions worldwide for its large edible roots. These sweet potato are hard when fry, so it is good to make a snack.