tree

Callery Pear

Pyrus calleryana 'Aristocrat'

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Essentials

At a Glance

Plant Type

Tree

Height

480 inches

Width

300 inches

Light

Full Sun

Zones

5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Adaptable

Lifespan

25-50 years

Native To

China, Vietnam

Toxicity

Non-toxic, but fruit is inedible

The Story

Plant Bio

Pyrus calleryana is a deciduous tree native to Asia, widely planted for its profuse spring blossoms and tolerance of urban conditions. However, it has become a notorious invasive species in many parts of North America. 'Aristocrat' is selected for its broad, pyramidal form and stronger branch structure, which is less prone to splitting than the infamous 'Bradford' pear. It offers a beautiful display of white flowers in spring and reliable reddish-purple fall color.

Bloom Period:

EarlyLate

Uses & Benefits:

'Aristocrat' pear is valued for its symmetrical pyramidal shape, dense canopy of glossy green leaves, and profuse clouds of white flowers in early spring. It also provides attractive orange, red, and purple fall foliage, offering multi-season interest in formal landscapes.

This tree is extremely tolerant of a wide range of urban conditions, including compacted clay soil, drought, and air pollution. Its fast growth rate makes it a popular choice for developers and homeowners seeking a quick landscape effect.

While its flowers provide an early nectar source for pollinators, the ecological impact is overwhelmingly negative. Pyrus calleryana has become a highly invasive species in many parts of the U.S., outcompeting native plants and forming dense, thorny thickets that disrupt local ecosystems. Planting is strongly discouraged by conservationists.

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Where to Buy

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Planting

How to Grow

Select a site in full sun with ample room to grow.
Dig a planting hole two to three times wider than the root ball.
Set the tree in the hole so the root flare is at or slightly above ground level.
Backfill with the original soil, gently tamping to remove air pockets.
Water deeply and consistently for the first year to establish roots.
Apply a 2-3 inch layer of mulch around the base, avoiding the trunk.

Pro Tip

Select native alternatives like Amelanchier or Cercis to avoid the invasive problems associated with all Callery pears.

Keep It Thriving

Care Guide

Do

Provide full sun for best flowering and fall color.
Water deeply during prolonged dry spells.
Prune young trees to develop a strong structure.
Monitor for fire blight, especially in wet spring weather.

Don't

Do not plant where its invasive seedlings can spread to natural areas.
Avoid heavy nitrogen fertilizer, which can encourage weak, fast growth.
Do not allow narrow, V-shaped branch unions to develop.
Avoid planting near other Callery pear cultivars to reduce cross-pollination.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Symmetrical street or lawn treeFormal avenue or allee plantingSpecimen for spring and fall interest

Companion Plants

Amelanchier canadensis (native alternative) Cercis canadensis (native alternative) Cornus florida (native alternative) Nyssa sylvatica (native alternative) Quercus rubra (native alternative)

Multiply

Propagation Methods

Good to Know

Common Questions

Callery Pear questions

What zones can Callery Pear grow in?

Callery Pear is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Callery Pear deer resistant?

Yes — Callery Pear is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Callery Pear bloom?

Callery Pear typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Callery Pear need full sun?

Callery Pear does best in full sun (6+ hours).

Is Callery Pear drought tolerant?

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