Numerous native trees are found in the county including Garry Oak and Washoe Pine trees. There is also a unique Garry Oak ecosystem. The area features many Garry Oak and Douglas fir trees. Some Garry oak is present at the forest edge. When used as firewood, garry oak produces burned. The site comprises of Garry oak woodland, oak savanna, and prairie grasslands. Garry Oak is a hard, heavy ring-porous hardwood. "Alnus rubra" (red alder), and "Quercus garryana" (Garry oak). The unique Mediterranean characteristics of the islands' climate supports the Garry oak ecosystem. In Washington, Garry oak has been used for aging single malt whiskey. In Oregon and Washington, it may also be associated with the Garry oak ("Quercus garryana"). Garry oak is the only native oak species in British Columbia, Washington, and northern Oregon. Garry oak woodlands create a landscape mosaic of grassland, savanna, woodland, and closed-canopy forest.