Yam is the main staple crop in Nigeria, which is a large tuber that is harvested and can last up to 6 months. Yam farming requires clearing the land, planting slices of yams for planting, and replanting after 3 months. There are large festivals held called the New Yam Festival that celebrate the harvesting of the new yam crop each year and feature much food. Other key crops and foods in Nigeria include kola nuts, palm wine, palm oil, maize, melons, and beans.