Milo is a fast growing shade tree that reaches heights of 30 feet. The leaves, shaped like hearts, grow from three to five inches wide. The bark is thick and corrugated, and the hibiscus-shaped flowers are yellow with a maroon center. It is unsure whether this plant is indigenous or introduced.

Found along the coastline on all Hawaiian islands, except Kaho'olawe, the early Polynesians used the milo wood for canoe hulls and to make bowls for poi. The fruit was used to create a yellowish-green dye and the seeds were taken as a laxative.