Quercus douglasii

Blue oak is a slow growing deciduous oak that usually grows 15-25 feet tall and about as wide. It is endemic to California and found in the foothills of the Central Valley. Does well with little care and no water. Rustic blue-grey leaves and light-colored bark. Makes a great shade tree. Grows with Coffeeberry, Ceanothus, Manzanita, Bay, or other Oaks. Endemic to California. Blue oak provides cover for cavity-nesting birds. Several rare or threatened species use blue oak woodland habitat. Bald eagles, golden eagles, peregrine falcons, and California condors inhabit blue oak woodlands Acorns were used as food for Native tribes. Found in open savanna to open woodlands with shrubby understory. Communitites located in Foothill Woodland Between 0 and 3500 feet.

The leaves of this med-sized oak (to 60') of the California foothills are blue-green, giving the whole tree a distinctive bluish cast. S/Dry-G Dr

Feeling blue? This oak sympathizes. This species from California is a slow-growing tree to 40' over time. Though it has blue leaves in summer, it also features soft pinkish new growth when the leaves emerge in spring, and muted yellow tones before they drop in late fall. Other than being deciduous, it has the texture, shape, and overall look of an evergreen oak. It is also a good performer in the Pacific Northwest and well adapted to the dry garden. This species is an excellent choice if you're looking for something that looks like an evergreen oak but won't cut out any light in winter. Hardy to at least -10 °F, perhaps lower. Rugged habit. Likes sun, dry.