Boone County Arboretum
9190 Camp Ernst Road
Union, Kentucky 41091
Phone: (859) 384-4999
Fax: (859) 384-6888
arboretum@boonecountyky.org

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Cultural Details for Pyrus calleryana

Common Name:
Callery (Ornamental) Pear

Growth Rate:
Fast growth rate. Moderately pyramidal in youth, broadening with time.

Average Mature Height:
30-50’

Average Mature Width:
20-35’

Flower Details:
White flowers, 0.375-0.75" across, borne in 3" diameter corymbs before or with the leaves. In full bloom for a week in March/April. The somewhat unpleasant odor of the bloom becomes more noticable when several callery pear trees are clustered together.

Fruit Details:
Small rounded pome, 0.5" or less across, russet-dotted, hidden by the foliage; not ornamentally effective. Usually present in great quantities; seedlings readilly invade unmaintained fields and road sides.

Fall Color:
Depending on the cultivar and individual conditions, fall color usually reddish purple, but can be yellow to red.

Bark Details:
Lustrous brown in youth, lightly ridged-and-furrowed and grayish brown at maturity, often developing horizontal checks with age, creating a somewhat blocky appearance.

Disease / Insect Problems or Resistance:
Basically free of pests, although fireblight can sometimes be a problem in stressful conditions.

Native Habitat:
Korea, Japan, China

Other Features:
Over-planted across the US for its uniform shape and dense flowering. But as it ages, the tree can literally split in half when weak branch attachments fail. A highly fertile seed crop makes it very invasive, creating 'pear forests' in old fields.

Culture and Care:
Prefers full sun in moist soil; tolerates wet and dry spells as well as polution. Adaptable to a range of soil pH. Easy to transplant in late winter or early spring. Zone 5-8(9)

This plant was blooming:
4/5/2010 - 4/14/2010
3/26/2007 - 4/2/2007

Plantings of this cultivar at Boone County Arboretum:
4120, 6190, 6200, 6210

    The information on this page may have come from one or more of the following sources:
  • Dirr, Michael. Manual of Woody Landscape Plants. Stipes Publishing. 1998.
  • Hightshoe, Gary L. Native Trees, Shrubs, and Vines for Urban and Rural America. John Wiley & Sons. 1988.
  • North Carolina Extension Plant Fact Sheets. www.ces.ncsu.edu
  • University of Connecticut Plant Database. www.hort.uconn.edu