Rare white-letter hairstreak butterflies have been spotted after volunteers planted elm trees.

Some trees and shrubs have a bad reputation for being susceptible to diseases: lilacs to powdery mildew, junipers to juniper tip blight, flowering crabapples to apple scab, and elms to Dutch elm ...

Purdue Landscape Report: We have received a few elm tree samples this year with a disease we do not often see, but which is relatively common: black spot of elm. This disease, also called elm ...

A new invasive insect is emerging in Central Ohio, and state officials want to know if you see one. Elm zigzag sawfly adults were trapped in Delaware County the week of April 15, according to the Ohio ...