SelecTree: Tree Detail

OREGON WHITE OAK
Quercus garryana

Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana Quercus garryana

Photo Locations: Redding, CA, UC Davis Arboretum - Davis, CA, Rancho Santa Ana Botanic Gardens - Claremont, CA, Regional Parks Botanic Garden, UC Berkeley Botanic Garden - Berkeley, CA, Tilden Regional Park - Berkeley, CA and Santa Barbara Botanic Garden - Santa Barbara, CA

General Notes

Underside of leaf is rusty or downy. Similar to valley oak, but found more commonly in foothill areas. Can occur in shrub or tree forms.

Native to Western North America.

Family: Fagaceae

Additional Common Names

OREGON WHITE OAK, GARRY OAK

Tree Characteristics

Erect or Spreading and requires ample growing space.

Oval, Rounded or Umbrella Shape.

Has Deciduous foliage.

Height: 40 - 90 feet.

Width: 30 - 60 feet.

Growth Rate: 12 Inches per Year.

Longevity 50 to 150 years or more.

Leaves Oblong to Obovate and Lobed, Glossy Dark Green, Bronze or Gold, Deciduous.

Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).

Brown Acorn, Medium (0.50 - 1.50 inches), fruiting in Fall or Winter.

Bark Dark Brown, Light Gray or Light Green, Furrowed or Scaly.

Shading Capacity Rated as Moderate in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 2 - 11 and 14 - 23.

USDA Hardiness Zones 7 - 9.

Exposure Full Sun to Partial Shade.

Moist to Dry Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Slightly Alkaline Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Beetle Borers, Caterpillars, Insect Galls and Scales, Crown Rot, Mistletoe, Oak Root Rot and Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Strong.

Root Damage Potential Rated as Low.

Allergy and Poisonous Health Hazard.

Biogenic Emissions considered High.

Desirable Wildlife Plant.

Attracts Birds and Squirrels.

Deer Palatable.

Cite this tree:
SelecTree. "Quercus garryana Tree Record." 1995-2017. Dec 11, 2017.
< http://selectree.calpoly.edu/tree-detail/quercus-garryana >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.