Callery Pear
Cultivation
Callery Pear Fruit
It is so widely planted throughout North America as an ornamental tree that the tree (specifically the Bradford Pear) has become a ubiquity in many suburban communities. It is tolerant of a variety of soil types, drainage levels and soil acidity. Its shape varies from ovate to elliptical. The symmetry of several cultivars lends to their use in somewhat formal settings, such as office parks or industrial parks. It is commonly planted for its decorative value, but its hard little fruits are taken by birds. Its white blossoms can be seen in early spring along the boulevards of many eastern U.S. towns. At the latitude of Pittsburgh, PA the trees often remain green until mid-November, and in warm autumns, the colors are often a brilliant end to the fall color season, while in a cold year they may get frozen off before coloring. In the South, they tend to be among the more reliable coloring trees.
The Callery Pear is proving to be an invasive species in some areas of North America, pushing out native American plants and trees. Seedling plants often differ from the selected cultivars in their irregular shape and thorns. In a paper in the botanical journal Castanea, Vincent (2005) reported the species as an escape in 152 counties in 25 states in the United States.
Cultivars
There are several cultivars in commerce, including ‘Aristocrat’, ‘Autumn Blaze’, ‘Bradford’ (Bradford Pear, the most commonly planted cultivar), ‘Capital’, ‘Cleveland Select’, ‘New Bradford’, ‘Redspire’, and ‘Whitehouse’. The neat, dense upward growth of ‘Bradford’ which makes it desirable in cramped urban spaces also results in a multitude of narrow, weak forks, unless corrected by selective pruning at an early stage. These weak crotches make the Bradford Pear very susceptible to storm damage where snowfall is heavy or when ice storms occur, or during the high winds of severe thunderstorms. Because of this, and the relatively short life span that results (typically less than 25 years), many groups have discouraged their use in landscaping in favor of other stronger trees including other Callery Pear cultivars like ‘Cleveland Select’, but also encourage the use of more locally native tree species.
Uses
Pear has one of the finest of textures of the fruitwoods. It is prized for making woodwind instruments, and pear veneer is used in fine furniture.
Callery pear can be used as rootstock for grafting pear cultivars such as Comice, Bosc, or Seckel and especially for nashi pear.
Winter Fruit
In Flower
Autumn Color
References
^ Cirrus Digital Pyrus calleryana var. dimorphophylla
^ Ohio State University Pyrus calleryana
Vincent, M.A. (2005). “On the spread and current distribution of Pyrus calleryana in the United States”. Castanea 70: 2031. doi:10.2179/0008-7475(2005)070[0020:OTSACD]2.0.CO;2.
External links
Plant Invaders of Mid-Atlantic Natural Areas
Pyrus calleryana images at bioimages.vanderbilt.edu
“Scientists Look for Clues Into How Tree Populations Become Invasive” Jan 15, 2008 by Stacy Kish, CSREES Staff.
Categories: Pyrus | Invasive plant species
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