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 ...

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 ...

When trees are very dry, they don’t have the energy to grab nutrients from the ground and create leaves. Lodgepole and ...

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 ...

PORTLAND, Ore. (KOIN) – An invasive insect known to attack conifer trees was discovered on out-of-state Christmas tree products that were shipped to big box stores in Oregon. The Oregon Department of ...

SPRINGFIELD, Mass. (WWLP) – Between the drought this summer and the presence of an insect known as the Spotted Lanternfly, these are dangerous times for the health of our trees and shrubs. Because of ...

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 ...

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State experts offer tips on how to identify insects that pose a threat to the region's trees and what to do if they are found ...

RICHMOND, Va. (WRIC) — Environmentalists are warning about Richmond’s crape myrtle trees being attacked by a non-native invasive species called bark scale. The tree-damaging bugs have resurfaced and ...