The invasive emerald ash borer, native to northeast Asia, has spread to 37 states over the past quarter century, killing nearly all of the ash trees it infests. But in Maine, a coalition of ...

The emerald ash borer has brought disappointment and heartbreak for more than two decades over an ever-increasing portion of the United States. For the Menominee Tribe of Wisconsin, the invasive ...

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 ...

Ash trees in the UK are rapidly evolving resistance in response to ash dieback disease, DNA sequencing of hundreds of trees has shown. The finding is good news, says Richard Buggs at the Royal Botanic ...

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 ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many ash trees that cool residential neighborhoods on hot summer days. On Wednesday, Oregon forestry officials ...