Ornamental Blooming Pear Tree

by Kay Novy

Title

Ornamental Blooming Pear Tree

Artist

Kay Novy

Medium

Photograph - Photography

Description

In much of North America, cultivars of P. calleryana are so widely planted as ornamental trees that they have become a nuisance. The trees are tolerant of a variety of soil types, drainage levels, and soil acidity. Their crown shape varies from ovate to elliptical, at least until loss of limbs due to excessive and unstable growth rates. The initial symmetry of several cultivars leads to their attempted use in settings such as industrial parks, streets, shopping centers, and office parks. Their dense clusters of white blossoms are conspicuous in early spring though the smells are commonly attested to as at best unpleasant and at worst horrible. At the latitude of Pittsburgh, Pennsylvania, the trees often remain green until mid-November, and in warm autumns, the colors are often bright, although in a cold year they may get frozen off before coloring. In the South, Callery pears tend to be among the more reliable coloring trees.


Autumn leaves
Several cultivars of Callery pear are offered commercially, including 'Aristocrat', 'Autumn Blaze', 'Bradford' (the commonly planted '"Bradford pear"), 'Capital', 'Chanticleer' (also known as 'Cleveland Select'), 'New Bradford', 'Redspire', and 'Whitehouse'.

The initially neat, dense upward growth of 'Bradford'which made it desirable in cramped urban spacesalso results in a multitude of narrow, weak forks, unless corrected by selective pruning at an early stage. These weak crotches make the tree very susceptible to storm damage. Because of this, and the resulting relatively short life span (typically less than 25 years), many groups have discouraged further planting of 'Bradford' and other similarly structurally deficient Callery pear cultivars (such other as 'Cleveland Select') in favor of increasing use of locally native ornamental tree species

Uploaded

March 9th, 2015

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