The residents have a subsistence farming economy, based on slash-and-burn techniques of clearing the bush. The most important crops are upland rice, cassava, palm nuts, and along the coast, fishing. Feed corn is grown at higher elevations farther inland. Sugar cane and several varieties of bananas grow in the wetland areas. Cash crops include coffee, cocoa and kola. Locally grown bamboo and piassava palm are widely used for construction, mats and baskets. Many tropical fruits, domestic and wild, grow in the region including oranges, limes, mangos, soursop, breadfruit and coconut.