PatternBaseWillow Oak
Quercus phellos, Fagaceae
Zones
5–9
Layer
Canopy
Lifespan
Perennial
Growth
Fast
Guild Roles
WindbreakShade ProviderBeneficial Insect HabitatProducer
Growing Conditions
Sun
Full Sun (preferred)Partial Shade (tolerated)
Water
Moderate (established)High (seedling)
Soil pH
5.5 – 7.5
Tolerances
Drought
Frost
Heat
Pest Resistance
Disease Resist.
Companion Plants
Antagonistic Plants
Oriental BeechFagus orientalis
Both are large canopy trees that compete intensely for light and may have allelopathic interactions.
Grey PoplarPopulus × canescensFast-growing poplar can suppress oak growth through shading and root competition for nutrients
Amur Cork TreePhellodendron amurenseCork tree produces allelopathic compounds and creates dense shade that inhibits oak seedling establishment
Tatarian HoneysuckleLonicera tataricaTatarian honeysuckle can outcompete native oak seedlings through aggressive growth and allelopathic compounds, reducing oak regeneration
Uses
Functions
Large WindbreakWildlife HabitatErosion ControlCarbon SequestrationUrban Windbreak
Edible Parts
Acorns
Medicinal Uses
Astringent Bark
Common Questions
What zones does Willow Oak grow in?
Willow Oak grows in USDA hardiness zones 5 through 9.
What are good companion plants for Willow Oak?
Good companions for Willow Oak include Cooba Wattle, Pacific Bayberry, Red-osier Dogwood, Himalayan Hazel.
Design guilds with Willow Oak and see companion relationships visually.
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