Calflora, a 501c3 non-profit
Distribution by County   6996    
Quercus garryana  Hook.
Garry's oak,   Oregon oak, garry oak,   Oregon white oak
Quercus garryana is a tree that is native to California, and also found elsewhere in western North America.
Record Count by County

Alameda: 4 Humboldt: 130 Monterey: 8 Solano: 1
Amador: 3 Kern: 90 Napa: 36 Sonoma: 319
Butte: 38 Lake: 31 Nevada: 16 Tehama: 77
Calaveras: 5 Lassen: 14 Placer: 2 Trinity: 181
Colusa: 5 Los Angeles: 51 Plumas: 73 Tulare: 62
Contra Costa: 26 Madera: 8 San Luis Obispo: 13 Tuolumne: 10
Del Norte: 22 Marin: 101 Santa Clara: 10 Yolo: 1
El Dorado: 5 Mariposa: 4 Santa Cruz: 1 Yuba: 25
Fresno: 18 Mendocino: 146 Shasta: 164
Glenn: 17 Modoc: 5 Siskiyou: 187

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/10/2025).