blue oak
Quercus douglasii
USDA zones6 to 9
SunHandles full sun to partial sun
WaterNeeds dry soil
Size30 to 50 feet tall40 to 70 feet wide
- Bloom season
- Spring, summer, autumn, winter
- Bloom color
- Yellow
- Foliage color
- Gray-green
- Soil types
- Sand, loam, clay
- Soil pH
- Acid, neutral
Garden uses
Attracts
Notes
Blue oak (Quercus douglasii) is a tree for low maintenance gardens. It is hardy to USDA zone 6, or down to -10°F (-23°C). This plant likes full or part sun and dry, sandy, loamy, or clay soil. Its bluish-green leaves are shallowly lobed, and the acorns feed wildlife. Deer rarely make it their first choice. It grows slowly, so give it room to spread.
Pairs well with California buckeye, Buckbrush, Big berry manzanita, and Mountain mahogany.
Native range
CA.