Koa ( Acacia koa )
Tree, broadleaf evergreen, broad spreading
Height : 2.5m to 10m included
Origin : Hawaii (Hawai’I, Maui, Oahu)
Environment : dry to wet forests, from 70 to 2300 m altitude
Climate : warm, temperate
Koa is one of the fastest growing Hawaiian trees, as it can reach 20 feet in five years. However, after that, it takes 50 years to reach a commercially useful dimension, and for this reason it is not often farmed. Ancient Hawaiians used to build their canoes with the trunk of Koa. The reddish wood is today used for musical
instruments, like the typical “Ukulele”. Grazing has much reduced the Koa population on the Hawaii islands, making the regeneration nearly impossible.