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National Invasive Species Awareness Week: Callery Pear/ Bradford Pear (Pyrus calleryana)

Today’s invasive species is an excellent example showing that some invasive species LOOK nice, but the negative impact they have on our environment isn’t worth it (especially when there are native species that look just as pretty!). The Callery Pear/ Bradford Pear (Pyrus calleryana) is an invasive landscaping tree that quite literally “stinks”. The Callery Pear was added to the Pennsylvania noxious weed list in November 2021. Check out this post to learn more!

Callery pear may no longer be distributed, cultivated, or propagated within the Commonwealth:

Identifying the Callery Pear:

More info and How to Manage the Spread of the Species:


  1. pepperberryfarm. “Callery Pear Blossoms”. 2018. Flickr, Accessed 3 March 2022.

2. Burkhard, Eric. “Five-petaled, showy flowers in a ball-shaped bundle”. 2020. Penn State Extension, Accessed 3 March 2022.

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