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Callery pear trees

October 24, 2008 | 1:00 p.m. CDT
Callery pears, originally sterile ornamental trees, have hybridized and are spreading throughout Columbia's open grasslands. Bad branch angles and heavy branches make the species susceptible to splitting, which is dangerous around roads and power lines.

RELATED STORIES: Columbia Parks and Recreation fights back against invasive Callery pear trees

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