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 ...

This tree is infected with the fungal pathogen that causes Pine Ghost Canker, which can be fatal for trees. (Akif Eskalen, UC Davis) Fungal pathogens that cause die-back in grape, avocado, citrus, nut ...

This list of stories illustrates the spread of insects like northern giant hornets, the presence of pine sawflies on local trees, and outbreaks of the California fivespined ips beetle in places like ...

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Climate change is hampering mountain pine beetle reproduction but also appears to slightly benefit the invasive insect in other ways, new University of Alberta research shows. On an apparent upside ...

The mountain pine beetle is one of the main causes of tree mortality in the pine forests of North America. For example, the insect has killed thousands of acres of pine forest in British Columbia and ...

Take a walk in the woods in Summit County and study the bark in the pines. Chances are high that you’ll spot some divots and channels carved out by none other than the infamous pine beetle. We know ...

PAXTON – When it comes to invasive insects, many local residents are familiar with the Asian long-horned beetle that wiped out 30,000 trees in and around Worcester a few years back. It appears the ...