Days are numbered in Pennsylvania for popular but invasive landscaping tree - pennlive.com
Callery pear tree is labeled as invasive species in Ohio
Gardening: Invasive Bradford pear trees a threat to landscape, gardens
Callery pear - Invasive Plants Association of Wisconsin
Bradford pear trees: Why you should think twice before planting
Callery Pear on List of Species Illinois Assessing as Invasive. Here's What That Means | Chicago News | WTTW
Callery Pear | Woody Invasive Species of the Great Lakes Basin | WIGL
Why You Should Cut Down Bradford Pear Trees — Nashville Tree Conservation Corps
Pretty pear trees invasive, hard to kill | The Caldwell County News
NC Bradford Pear Bounty | NC State Extension
Why the Bradford Pear Tree Is Plaguing the South - The New York Times
Ohio to ban planting and sale of Callery Pear tree, with its bad smell, in 2023
Why you shouldn't grow Callery/Bradford Pear Trees – GrowIt BuildIT
Callery pear trees are a menace to the Kentucky garden
Do Not Plant: Invasive Bradford Pear
The Invasive Callery Pear | Oklahoma State University
Virginia Cooperative Extension Master Gardener Program - We think Callery pears are THE WORST TREES! Have you noticed how many callery pears you now see along the roadside?! Callery pears (of which
Bounty' offered on invasive Bradford pear trees in North Carolina | WFAE 90.7 - Charlotte's NPR News Source
Bradford Pear trees make Ohio's invasive species list | Ideastream Public Media
Bradford Pears: Pretty But Invasive! - Conserving Carolina
Pyrus calleryana - Wikipedia
