Safeguarding your trees against pests is important to their health and longevity. Invasive species can wreak havoc by defoliating or infecting trees, and left untreated, can lead to loss of limbs and ...

Angela Mech, assistant professor of Entomology at University of Maine, has been leading the research for the i-Tree pest predictor. Mech specializes in invasive forest insects. University of Maine ...

Streetlights left on all night cause leaves to become so tough that insects cannot eat them, threatening the food chain, a study has found. “We noticed that, compared with natural ecosystems, tree ...

Occasionally, homeowners will notice small holes in the trunks of landscape trees. This may not mean impending death to the tree, but it’s not good. The presence of holes usually means that an insect ...

Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park discuss a tree-related topic from general care and planting tips to how ...

Round, white hemlock woolly adelgid ovisacs are found on the undersides of branches near the base of the needles. (Michigan Department of Natural Resources) For the first time, a destructive invasive ...

An invasive caterpillar species is posing a serious threat to a cherished native moth, even though the two never directly compete for food, according to new research from ecologists at the University ...

An "alarming" invasive insect has been found across further areas of Texas, infesting and killing trees. The invasive emerald ash borer (EAB) has been detected in Grayson, Hill, Hood, McLennan and ...

OTTAWA COUNTY, MI – Majestic hemlocks towering on dunes and along streams in Ottawa County may soon be a thing of the past if a tiny insect cannot be controlled. The hemlock woolly adelgid (HWA), a ...

Climate-induced warming is fueling the proliferation of insects keen on invading Colorado’s forests and leaving the trees they devour for dead, a new report has found. After a wet and cool 2023, ...

Michigan has 10 insects on its invasive species list. Many of these insects threaten trees and plants across the state. If you believe you have found one of these invasive insects, you can report it ...