Quercus douglasii
Blue Oak, White Oak

A large, slow-growing deciduous tree with a variable form and spreading, contorted, arching branches. Bark becomes checkered and light gray with age. Blue-green to dull green leaves are leathery and oval with shallow, wavy lobes. Fall foliage color is variable and may be yellow-orange or dull brown. Inconspicuous female flowers and male catkins yield acorns. Native to California. Provides habitat and food for numerous animal species.

USDA zones: 6 - 10
Sunset zones: 3 - 11, 14 - 24
Mature size: 15 - 60 feet high and wide
Light needs: full sun
Water needs: little to moderate water