WLWT: Why Bradford pear is now banned in Ohio
UC biologist Theresa Culley explains how Callery pear trees are growing wild across Midwest
WLWT-Channel 5 turned to University of Cincinnati biology professor Theresa Culley to explain how Ohio banned the sale of an invasive tree this month to protect native forests.
Ohio is the first state to ban the sale of Callery pear trees. Photo/Troy Jarrell/Unsplash
Ohio was the first state in the country in 2023 to ban the sale of Callery pear trees, an ornamental that sprouts white flowers in the spring. The trees, which include Bradford pears, for years were a popular choice for landscapers and nurseries.
The pear trees started growing wild in forests and open spaces across the Midwest. But when a sterile variety was crossed with other varieties to make them more hardy, they began taking over forests from Michigan to Georgia.
The trees in 2018 were placed on Ohio's invasive species list, starting the clock for landscapers, growers and nurseries to replace their inventories. South Carolina and Pennsylvania have also passed bans that will take effect soon.
Featured image at top: UC biology professor Theresa Culley stands in a grove of wild-growing Callery pear trees in Cincinnati's Harris Benedict Nature Preserve. Photo/Joseph Fuqua II/UC
More UC Biology in the News
UC biology professor Theresa Culley serves on the Ohio Invasive Plants Council. Photo/Joseph Fuqua II/UC
- The Columbus Dispatch: Ohio's ban on Callery pear trees now in effect
- WDTN-2News: Ohio officially prohibits Callery pear tree
- Landscape Business: Ohio outlaws ubiquitous pear trees
Related Stories
What makes us happy?
August 3, 2026
Suzie White, an assistant professor in the UC School of Education, was interviewed by the publication Upworthy for a story about the communal nature of happiness. White teaches the class, Happiness in Action, which applies the science of happiness to everyday life.
2026 Cincinnati Business Courier's '40 Under 40' includes nine UC alumni
August 3, 2026
Nine remarkable University of Cincinnati alumni have been named by the Cincinnati Business Courier to its annual “40 Under 40” Class for 2026.
Summer grads ready for life’s next chapter
August 3, 2026
The University of Cincinnati will honor 2,125 summer 2026 graduates in two ceremonies at Fifth Third Arena, highlighting record enrollment, co-op success and global student stories.