SelecTree: Tree Detail

WILLOW OAK
Quercus phellos

Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos Quercus phellos

Photo Locations: LSU Hilltop Arboretum - Baton Rouge, LA, Louisiana State Arboretum - Ville Platte, LA, Hoyt Arboretum - Portland, OR and The National Arboretum - Washington, DC

General Notes

Fine textured foliage, yellow fall color. Dead, brown leaves tend to hang on the tree in fall.

Native to Southeastern United States.

Family: Fagaceae

Tree Characteristics

Erect or Spreading and requires ample growing space.

Oval, Rounded or Umbrella Shape.

Has Deciduous foliage.

Height: 50 - 90 feet.

Width: 30 - 50 feet.

Growth Rate: 24 to 36 Inches per Year.

Longevity Greater than 150 years.

Leaves Lanceolate to Linear, Medium to Light Green, Bronze or Gold, Deciduous.

Flowers Inconspicuous. Brown. 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 Wildlife use it.

Bark Dark Gray, Light Gray or Red Brown, Furrowed or Smooth.

Shading Capacity Rated as Moderate in Leaf.

Shading Capacity Rated as Moderately Dense out of Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 2 - 4, 6 - 16 and 18 - 21.

USDA Hardiness Zones 6 - 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 Not Suited.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Beetle Borers and Insect Galls, Armillaria.

Health, Safety & Environmental Concerns

Branch Strength Rated as Strong.

Root Damage Potential Rated as Moderate.

Allergy and Poisonous Health Hazard.

Biogenic Emissions considered High.

Desirable Wildlife Plant.

Attracts Birds and Squirrels.

Deer Palatable.

Wildlife use Fruit.

Cite this tree:
SelecTree. "Quercus phellos Tree Record." 1995-2018. Jun 24, 2018.
< https://selectree.calpoly.edu/tree-detail/quercus-phellos >

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.