The Garry oak (Quercus garryana) is a deciduous tree that is the only native oak of Washington State. Garry oaks are extremely drought tolerant once established. They provide crucial habitat to hundreds of plants and animals, some of which have become rare. The Garry oak ecosystem is classified as a critically imperiled ecosystems in our state. According to the US Forest Service, up to 99% of Garry oak habitat has been lost in some areas of the Northwest.