shrubN. America Native

Bear Oak

Quercus ilicifolia

The Story

Plant Bio

Quercus ilicifolia, commonly known as bear oak, is a deciduous multi-stemmed shrub or small contorted tree native to dry, sandy barrens and rocky ridges of eastern North America. The species is highly adapted to fire-prone ecosystems and harsh northern winters, developing an open, gnarled crown over time.

This oak is distinguished by its small, holly-like leaves with three to seven bristle-tipped lobes that turn a rich reddish-purple in the fall. The glossy dark green upper surfaces contrast with pale, densely woolly undersides, while the plant produces small, high-tannin acorns that provide critical wildlife forage.

Uses & Benefits:

Gnarled, contorted growth habit with glossy, holly-like foliage that turns reddish-purple in fall.

Excellent for stabilizing dry, sandy, or rocky slopes where other woody plants fail to survive.

Provides critical nesting cover and high-tannin acorns for wildlife, and serves as a larval host for specialized moths.

Essentials

At a Glance

Plant Type

Shrub

Height

216"

Width

157"

Light

Full Sun

Zones

4, 5, 6, 7, 8

Water

Low

Humidity

Moderate to low

Lifespan

Long-lived

Native To

Eastern North America

Toxicity

Mildly toxic if ingested

Bloom period

Spring

In flower about 3 months of the year

Planting

How to Grow

Select a planting site in full sun with exceptionally well-drained, acidic, sandy or rocky soil.
Dig a deep planting hole to accommodate the aggressive, downward-growing taproot without bending it.
Backfill with the native, unamended sandy soil, avoiding any organic compost or fertilizers.
Water deeply immediately after planting to settle the soil, then transition to total neglect once established.

Pro Tip

Plant in nutrient-poor, extremely gritty sand or rocky soil in full sun, and withhold all supplemental irrigation once the deep taproot is established; fertile loams or regular watering will induce root stress and chlorosis.

Keep It Thriving

Care Guide

Do

Grow in nutrient-poor, acidic, sandy or gravelly substrates.
Ensure the planting site receives full, unobstructed sun.
Prune minimally and only during the dormant winter months to prevent oak wilt transmission.

Don't

Do not apply fertilizers or rich organic soil amendments.
Do not plant in heavy, wet, clay, or highly fertile loam soils.
Do not irrigate once the root system is established.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pest Check
Propagate
Prune
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Erosion ControlNative RestorationRock GardensWildlife Gardens

Companion Plants

Pinus rigida Vaccinium angustifolium Comptonia peregrinaGaylussacia baccata

Multiply

Propagation Methods

Good to Know

Common Questions

Bear Oak questions

What zones can Bear Oak grow in?

Bear Oak is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Bear Oak deer resistant?

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

When does Bear Oak bloom?

Bear 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 Bear Oak need full sun?

Bear Oak does best in full sun (6+ hours).

Is Bear Oak drought tolerant?

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