treeN. America Native

Escarpment Live Oak

Quercus fusiformis

The Story

Plant Bio

Quercus fusiformis, the escarpment live oak, is a broad-spreading, evergreen tree native to the limestone hills of central Texas and southern Oklahoma, characterized by a dense, round-topped canopy and dark, deeply furrowed bark. The leathery, dark glossy green leaves are elliptic to oblanceolate, emerging with a light green or bronze tint in spring alongside drooping yellowish-green male catkins.

This species is distinguished from the closely related Quercus virginiana by its narrower, spindle-shaped acorns and significantly greater cold hardiness. It forms thickets in its native upland habitats and exhibits exceptional drought tolerance once its deep taproot system is established.

Uses & Benefits:

Provides a structural, broad-spreading evergreen canopy with dark, deeply textured bark.

Functions as an exceptionally drought-tolerant windbreak and shade tree for alkaline, rocky soils.

Provides nesting sites for birds and produces acorns that serve as a critical food source for native wildlife.

Essentials

At a Glance

Plant Type

Tree

Height

591"

Width

827"

Light

Full Sun, Partial Sun

Zones

7, 8, 9, 10

Water

Low

Humidity

Moderate

Lifespan

Long-lived

Native To

North America

Toxicity

Non-toxic

Bloom period

Spring

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with well-drained soil, avoiding low-lying areas prone to standing water.
Dig a hole twice as wide as the root ball but no deeper, ensuring the root flare sits slightly above the surrounding soil grade.
Backfill with native soil without adding amendments, tamping lightly to remove air pockets, and water deeply to settle.
Apply a three-inch layer of organic mulch over the root zone, keeping it several inches away from the trunk to prevent rot.

Pro Tip

Prune strictly during the dormant winter months of December and January; warm-season pruning wounds attract Nitidulid beetles that transmit fatal oak wilt.

Keep It Thriving

Care Guide

Do

Paint all pruning cuts immediately with pruning sealer to prevent sap-feeding beetles from transmitting oak wilt.
Water newly planted trees deeply once a week during their first growing season to establish the taproot.
Prune exclusively during mid-winter when the tree and insect vectors are completely dormant.

Don't

Do not prune or wound the bark between February and June when oak wilt transmission risks are highest.
Do not plant in poorly drained clay soils or areas subject to prolonged waterlogging.
Do not apply routine nitrogen fertilizers unless a soil test indicates severe nutrient deficiency.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mulch
Pest Check
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen TreeShade TreeWindbreakErosion Control

Companion Plants

Sophora secundiflora Salvia greggii Nolina texana

Multiply

Propagation Methods

Good to Know

Common Questions

Escarpment Live Oak questions

What zones can Escarpment Live Oak grow in?

Escarpment Live Oak is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Escarpment Live Oak deer resistant?

Not reliably. Deer may browse Escarpment Live Oak, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Escarpment Live Oak bloom?

Escarpment Live Oak typically blooms in spring through spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Escarpment Live Oak need full sun?

Escarpment Live Oak does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Escarpment Live Oak drought tolerant?

Yes — once established (usually after the first full season), Escarpment Live Oak handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.