Oregon Oak
Quercus garryana
Last reviewed: June 2026
Oregon Oak (Quercus garryana) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
180"–600" H × 180"–600" W
Bloom
Apr, May
Native to
CA, OR, WA
Pollinators
bees, beetles
Browse plants for this ecoregion
A deciduous tree native to western North America with distinctive lobed leaves and acorns. It grows slowly but can reach impressive heights of 15-50 feet with equal spread, offering substantial shade and wildlife habitat. Its spring catkins give way to acorns that mature in the fall.
In an HOA neighborhood
Oregon Oak takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Extremely large mature size exceeds most residential front yard scales
- Leaf drop creates seasonal maintenance needs
- Slow growth means decades to reach aesthetic maturity
Wildlife value
Host plant for California Hairstreak, Mottled Duskywing.
This oak supports numerous wildlife species including bees and beetles that visit its spring flowers. The acorns provide crucial food for birds, squirrels, and other mammals.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Oregon Oak fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.