Koa: The Big Island’s Treasured Wood

Koa Pig Board Horizon Guest House Hawai
Pig board showing example of 'compression or fire' very rare even for curly koa

To the casual visitor, Hawaii is sunshine and beaches. But it’s more than that. If you visit often, or for long enough, or are lucky enough to live here, you’ll discover a unique product that is grown only in Hawaii (endemic) – and no, it’s not taro, lilikoi, or even lychee: it’s Acacia koa, simply known here as koa.

Koa stand Horizon BnB Kona Coast Hawaii
Plant stand by Russ Johnson

In ancient times, it was so prized that it was made kapu, prohibited for anyone to possess except for the royal class (ali’i). Upon the death of King Kamehameha in the late 1700’s, the kapu was removed, allowing all Hawaiians to possess this unique wood.

Koa bowl 2 Horizon Guest House Hawaii Big Island
Classic Hawaii bowl or umeke

Similar to black walnut and known for its hardness and extraordinary beauty, the Hawaiians found a wide range of uses for koa, from canoes to household dishes and utensils. When malihini settlers arrived, they discovered that it is also a ‘tonewood’ and could be used to make stringed instruments, such as the ukulele.

Koa Pen Horizon Guest House Hawaii Big Island
Curly koa ball point pen

Koa trees can attain a height of 50-75 feet and a trunk circumference of 20 feet. They are one of the fastest-growing Hawaiian trees, capable of reaching 20-30 feet in five years.

Koa wood Horizon B&B Hawaii
Detail of fine-grained koa

Ideally adapted to volcanic conditions, the larger Hawaiian islands supported huge forests of magnificent koa trees. However, the introduction of cattle, and the resulting clearance of huge swaths for pastures, severely reduced it’s habitat.

Koa trees are not endangered and recent restrictions on cutting, and protecting the seedlings from grazing cattle, sheep, and goats, have increased its population.

BUT! The only koa that can be harvested are dead or decaying koa trees on public lands.

Koa wood Horizon Guest House Hawaii
Headboard, part of 4-poster bed patterned on King Kamehameha’s bed

It can take more than 25 years before a seedling grows into a tree large enough to be useful. In the meantime, it’s a premium wood selling for as much as $150/board. A fine piece of koa furniture, such as a dining table will set you back as much as a small car. There are several galleries on the Big Island that showcase koa pieces, Hawaii Treasure Mill and Harbor Gallery among others.

Quilt koa Horizon Guest House Hawaii Big Island
Quilted bedspread in koa leaf pattern by Sig Zane
Koa bowl Horizon Guest House Kona Coast Hawaii
Curly Koa
Author: Angus Meek