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 ...

Cottony white insects have been found in counties across western and southeastern Michigan, prompting state agencies to issue ...

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 ...

Trees are often promoted as an important tool for combating climate change. That’s because trees take in carbon dioxide from the air and lock it away in wood and soil for years. But trees may not be ...

The Michigan DNR says early spring is the ideal time to apply insecticides to protect hemlocks from the hemlock woolly ...

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 ...

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 ...

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 ...

My favorite part of the holidays has always been the Christmas tree. There is just something magical about bringing a real, live, fresh-cut evergreen tree into my living room and decorating it with ...