Two new pests in the Willamette Valley could decimate trees and worsen the ‘urban heat island’ effect that makes some neighborhoods hotter than others For years, Portland area politicians have ...

Like many trees, ash trees undergo leaf shedding each fall and winter. Unlike other trees, ash trees are specifically ...

GLOUCESTER COUNTY, Va. (WRIC) — The emerald ash borer, a metallic-green invasive insect, have spread throughout the state over the past 15 years, killing native ash trees in its wake, but efforts are ...

EAST PROVIDENCE, R.I. (WPRI) — The city of East Providence is taking proactive steps to save its tree canopy from an invasive insect species. City officials told 12 News a survey of city-owned ash ...

The emerald ash borer, a tiny yet destructive invasive beetle, has been confirmed in Aurora. That's prompting officials in the Colorado city to remove or treat infected trees and encourage residents ...

Add Yahoo as a preferred source to see more of our stories on Google. Trunk and branches of ash tree covered in green leaves - Damian Pawlos/Getty Images When you've visited a park or campground you ...

It kills ash trees when larval beetles burrow into the tree and feed on the growing cambium level of the tree. That action cuts off nutrients to the rest of the tree. The top of the tree usually shows ...

MANHATTAN, Kan. (KSNW) — A pest that last made a major appearance in Kansas nearly a decade ago is back — and it’s feasting on ash trees across the state. Kansas State University entomologist Raymond ...

Add Yahoo as a preferred source to see more of our stories on Google. Branches and leaves of a mountain ash tree in South Dakota - Jim Parkin/Shutterstock If you've lived in South Dakota within the ...

New research out of the University of Vermont finds that insects and disease are growing causes of tree mortality in the ...