Post Oak

Quercus stellata, Fagaceae

Zones

6–9

Layer

Canopy

Lifespan

Perennial

Growth

Slow

Guild Roles

ProducerShade ProviderWindbreakBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)

Water

Low (established)Moderate (seedling)

Soil pH

5.5 – 7.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Silvery LupineLupinus argenteus

Nitrogen FixationBeneficial Insect Habitat

Hillside BlueberryVaccinium pallidum

Shade ProvisionNutrient Accumulation

Purple ChokeberryAronia prunifolia

Pollinator SharingBeneficial Insect Habitat

Common GreenbrierSmilax rotundifolia

Physical SupportBeneficial Insect Habitat

Antagonistic Plants

Limber PinePinus flexilis

Oak species release tannins and other allelochemicals that can inhibit conifer establishment and growth, particularly affecting pine seedlings

BuckbrushCeanothus cuneatus

Both are deep-rooted woody species that compete for water resources, with potential allelopathic interference

Uses

Functions

Acorn ProductionTimberWildlife HabitatErosion ControlCarbon Sequestration

Edible Parts

Acorns

Medicinal Uses

Astringent BarkTannin Source

Common Questions

What zones does Post Oak grow in?

Post Oak grows in USDA hardiness zones 6 through 9.

What are good companion plants for Post Oak?

Good companions for Post Oak include Silvery Lupine, Hillside Blueberry, Purple Chokeberry, Common Greenbrier.

Design guilds with Post Oak and see companion relationships visually.

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