Valley Oak
Quercus lobata
Last reviewed: June 2026
Valley Oak (Quercus lobata) 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
240"–600" H × 240"–600" W
Bloom
N/A
Native to
CA
Browse plants for this ecoregion
Valley oak is a large native oak tree, growing up to 50 feet tall with a broad, majestic canopy. It features deeply lobed, deciduous leaves and produces acorns in the fall. This long-lived, drought-tolerant tree thrives in full sun and requires very little water once established.
In an HOA neighborhood
Valley 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 size (20-50 feet) exceeds most front yard spaces
- Extensive root system may damage foundations, sidewalks and utilities
- Drops large quantities of leaves and acorns that require cleanup
Wildlife value
Valley oaks are keystone species supporting hundreds of wildlife species. Their acorns provide essential food for deer, squirrels, birds, and other animals, while the trees offer critical nesting habitat and shelter.
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 Valley Oak fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.