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 ...

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 ...

One type of apple insect control sprays should be applied shortly after the flower blossoms fall from the tree, according to ...

Scientists have planted American trees in China, Korea and elsewhere to attract hungry insects. Their hope is to identify the ...

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 ...

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 ...

If you notice a substance that looks like ash or soot on your trees, it's likely not the result of a fire. Instead, you're ...

It might be a good idea to dispose of this year’s Christmas tree sooner rather than later. While it’s not a regular occurrence during the holiday season, University of Wisconsin-Madison entomologist ...

There’s nothing like the pine scent of a fresh-cut Christmas tree during the holiday season. The aroma and beauty of the outdoors are welcome in homes, but a freshly cut Christmas tree may harbor ...

GLOUCESTER Co., Va. - The Virginia Department of Forestry said it has confirmed the presence of the emerald ash borer, an invasive tree-killing insect, in Gloucester County. A release from the VDOF ...