Oregon Urban Tree Catalog

Quercus kelloggii CALIFORNIA BLACK OAK

BROADLEAF

DECIDUOUS

FULL SUN

NATIVE

HIGH DROUGHT TOLERANCE

H: 65FT W: 65FT

California black oak is a slow-growing tree native to the Western United States, primarily California, extending north into Southwestern Oregon and slightly into Mexico. Seedlings grow slowly, often only 4–6 inches in the first year as roots establish, before averaging about 1 foot per year. Over time, it develops an open, park-like woodland structure with a large, high canopy that provides excellent shade and space beneath for seating. This oak plays a vital ecological role, offering food and shelter for birds, mammals, and other wildlife, and often coexists with other native species like Oregon white oak ( Q. garryana ).

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