Clusters of round, dark purple-to-black, berry-shaped acai fruits are harvested to make juice, ice pops, and herbal supplements. Ethnobotanists have also documented folk medicine uses for the seed oil, fruit rind, and roots. The inner core of the thin trunk of the acai tree is well-known as the source of hearts of palm. Acai is primarily grown in the Para region of the Amazon estuary, in the northern region of Brazil. It also grows in French Guyana, Panama, Ecuador, and Trinidad.