SelecTree: Tree Detail

EMORY OAK
Quercus emoryi

Quercus emoryi Quercus emoryi

Photo Locations: Los Angeles County Arboretum - Arcadia, CA

General Notes

This live oak, typically grows in dry hills at moderate altitudes. In the red oak group, retains its leaves through the winter until the new leaves are produced in spring. An important food for squirrels, birds and other wildlife. The tree is named after the United States army surveyor, Lieutenant William Hemsley Emory, who surveyed the area of west Texas where it was discovered in 1846.

Native to Southwestern United States and Northern Mexico.

Family: Fagaceae

Tree Characteristics

Erect or Spreading and requires ample growing space.

Oval, Rounded or Umbrella Shape.

Has Evergreen to Partly Deciduous foliage.

Height: 30 - 60 feet.

Growth Rate: 24 Inches per Year.

Longevity Greater than 150 years.

Leaves Lanceolate to Oblong, Dark Green, No Change, Evergreen to Partly Deciduous.

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

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

Bark Dark Brown or Dark Gray, Fissured.

Shading Capacity Rated as Moderate in Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 10 - 13.

USDA Hardiness Zones 9.

Exposure Full Sun to Partial Shade.

Moist to Dry Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Seaside Tolerance is Not Suited.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Strong.

Root Damage Potential Rated as Moderate.

Allergy and Poisonous Health Hazard.

Desirable Wildlife Plant.

Attracts Birds and Squirrels.

Deer Palatable.

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

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.