Blue Oak
Quercus Douglasii
Overview
Quercus douglasii, the Blue Oak, is a deciduous tree native to California's coastal ranges. Renowned for its bluish-gray leaves, this hardy oak thrives in dry, rocky soils, reaching 20-50 feet in height. Its canopy spreads 30-50 feet, providing dense shade and habitat value. Drought-tolerant once established, it's a low-maintenance choice for naturalistic designs, offering stunning fall color and acorns for local wildlife in USDA zones 7-9.
Sun FullWater Very LowZones 7–7Type TreeClimate Mediterranean
Culture
- Sun
- Full
- Water
- Very Low
- USDA zones
- 7–7
Shape & size
Classification
- Type
- Tree
- Family
- Fagaceae
- Climate
- Mediterranean
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Photographs by 11 contributors
- Janna Layton, CC BY-SA 4.0 · source
- John Rusk from Berkeley, CC BY 2.0 · source
- Larry D. Moore, CC BY 4.0 · source
- Sindhu Ramchandran, CC BY 2.5 · source
- Cossey25, CC BY-SA 4.0 · source
- Eugene Zelenko, CC BY-SA 4.0 · source
- Franz Xaver, CC BY-SA 3.0 · source
- Katja Schulz from Washington, D. C.,…, CC BY 2.0 · source
- James St. John, CC BY 2.0 · source
- Benny White, CC BY-SA 4.0 · source
- Franco Folini from San Francisco, USA, CC BY-SA 2.0 · source
