The emerald ash borer's larvae attack trees from within. Beech leaf disease from nematodes attack beech trees; Various fungal ...

Entomologists have warned that European sawflies — invasive bugs that resemble wasps — are taking over pine trees in Washington's Pierce County, perhaps most well-known as the home of Mount Rainier ...

A fungal disease is spreading through pine forests across Alabama, threatening the trees that fuel one of the state’s biggest economic engines.