Blue Oak, Quercus douglasii
Oaks are one of the most important keystone species, providing habitat for 300-500 species of wildlife. No wonder the people voted for the oak as our National Tree in 2004.
Plant Description
Plant Type: Tree
Size: 20-50 ft tall, 20-30 ft wide
Form: Upright, Rounded
Growth Rate: Slow
Dormancy: Summer Semi-Deciduous, Winter Deciduous
Flower Color: Yellow, Cream, Green
Flowering Season: Spring, Winter
Wildlife Supported: Numerous species of wildlife are attracted to oaks including butterflies, which use Oaks as host plant for the larvae. Birds, Squirrels (acorns), Insects
Landscaping Information
Sun: Full Sun, Part Shade
Moisture: Low
Summer Irrigation: Max 1x / month once established
Cold Tolerance: Tolerates cold to 0° F
Soil Drainage: Fast
Natural Habitat: Dry, Well-drained slopes, Interior foothills, Woodlands below 3600’
History: Named for its discoverer, David Douglas (1798-1834), the Scottish botanical explorer.