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TREES & plants

Callery pear (Not recommended)

Callery pear has invasive traits that enable it to spread aggressively. This tree is under observation and may be listed on official invasive species lists in the near future. Review of risks should be undertaken before selecting this tree for planting sites. The various cultivars of this species are more commonly available than the species itself. Callery pear has a weak wood and branch structure and is susceptible to ice storm damage.

Botanical name: 
Pyrus calleryana
All Common Names: 
Callery pear
Family (English): 
Rose
Family (Botanic): 
Rosaceae
Tree or Plant Type: 
  • Tree
Native Locale: 
  • Non-native
Landscape Uses: 
  • Specimen
  • Shade
Size Range: 
  • Large tree (more than 40 feet)
  • Medium tree (25-40 feet)
Mature Height: 
30-50 feet
Mature Width: 
20-35 feet
Light Exposure: 
  • Full sun (6 hrs direct light daily)
Hardiness Zones: 
  • Zone 4
  • Zone 5
  • Zone 6
  • Zone 7
  • Zone 8
  • Zone 9
Soil Preference: 
  • Dry soil
Acid Soils: 
  • Tolerant
Alkaline Soils: 
  • Tolerant
Salt Spray: 
  • Moderately Tolerant
Soil Salt: 
  • Intolerant
Drought Conditions: 
  • Tolerant
Poor Drainage: 
  • Tolerant
Planting Considerations: 
  • Aggressive
  • Commonly planted
  • Highly susceptible to ice damage
  • Weak wood and branch structure
Foliage: 
  • Deciduous (seasonally loses leaves)
Ornamental Interest: 
  • Fall color
Season of Interest: 
  • Mid spring
Flower Color & Fragrance: 
  • White
Shape or Form: 
  • Pyramidal
Growth Rate: 
  • Moderate
Transplants Well: 
  • Yes
Wildlife: 
  • Insect pollinators
More Information: 

Tree & Plant Care

The tree should be specifically pruned to minimize damage from narrowly crotched branches.  

Disease, pests, and problems

The tree is susceptible to gray mold and wood rots and may also be targeted by insects such as the Eastern tent caterpillar and leaf rollers.   Additionally, the tree’s narrow branch angles make trees prone to breakage and limit its ornamental usefulness.

Disease, pest, and problem resistance

 

Native geographic location and habitat

C-Value: 

 

Attracts birds, pollinators, or wildlife

Birds are attracted to the fruit of the callery pear tree.

Bark color and texture 

The bark is brown and shiny in youth and gray-brown and slightly ridged at maturity.

Leaf or needle arrangement, size, shape, and texture

Leaves

  • Size: 1 ½-3” long and wide
  • Shape: ovate
  • Texture: glossy

Flower arrangement, shape, and size

  • Shape: 5-petal
  • Size: 3/8- ¾” 

Fruit, cone, nut, and seed descriptions

  • Type: Pome
  • Size: ½” or less
  • Color: russett-dotted

Cultivars and their differences 

Pyrus calleryana ‘Aristocrat’ (Aristocrat callery pear):

Leaf has a wavy edge, less prone to branch breaking, more susceptible to fire blight, fall color can be inconsistent.

Pyrus calleryana ‘Autumn Blaze’ (Autumn Blaze callery pear):

Consistent early fall color, more cold hardy, susceptile to fire blight, consistently good fall color (red-purple)

Pyrus calleryana ‘Chanticleer’ (Chanticleer callery pear):

More narrow habit, foliage has a red-purple fall color

Pyrus calleryana ‘Jack’ (Jack callery pear):

Shorter and more narrower than species, yellow in fall

Pyrus calleryana ‘Redspire’ (Redspire callery pear):

Fall color more yellow than red, oval form, less prone to branch breakage, very susceptible to fire blight