The Amy Greenwell Ethnobotanical Garden supports native Hawaiian cultural traditions of land use and plants, and conserves the plant resources of traditional Hawaiian cultural activities. The garden discovers and shares knowledge of Hawaiian ethnobotany, maintains a respository for native Hawaiian and Polynesian introduced plants, works for native plant conservation, and preserves an archaeological remnant of the Kona Field System on the garden site. The collection includes 250 types of plants used by Hawaiians, major collections of Hawaiian crop plants including banana, sugarcane, and taro, and many rare native plants including 10 federally listed endangered species.