No ash borer bugs have been found on his block of W. California Avenue yet, but the ash trees aren't as healthy as they used to be. "It's hard, but I've seen the trees decline," Gregoire said. He was ...

There’s a tree killer on the loose in Oregon, and nobody knows how to stop it. An invasive green beetle called the emerald ash borer arrived in the Midwest from Asia, and it’s killed over 100 million ...

A small beetle is responsible for the death and decline of billions of ash trees in North America, and the race is on to stop it from causing further damage. The USDA is hoping to spread the word so ...

Tree crews in the Twin Cities suburbs were especially busy last year. Severe storms followed years of drought, just as emerald ash borer damage was approaching a predicted peak. Some trees fell down.

Christopher Morris, an urban biologist with Dallas Park and Recreation, holds up a vial containing three emerald ash borer beetles floating in a solution in front of an ash tree that is suffering ...

This non-native beetle kills ash trees by feeding on the layer beneath the bark, cutting off water and nutrients. Approximately one-third of the trees in Fort Collins are ash trees, making the city's ...

Scientists at the University of Minnesota published a study in the journal Forests in November 2025 about the potential for fungi to slow the spread of emerald ash borer, a beetle that kills ash trees ...