Koa is the largest native tree in the Hawaiian Islands reaching heights of about 115 feet (33 m)! Commercially, koa is one of the most expensive woods in the world. It is used to make furniture, veneer, and crafts. Most koa is harvested from remnant individuals or stands in pasture lands.

Acacia koa is endemic to Hawai'i and is found on all the main islands except Kaho'olawe and Ni'ihau.