A new, invasive insect species has been detected in Ohio for the first time, authorities said. The elm zigzag sawfly was spotted by researchers infesting elm trees in both Franklin and Delaware ...

Scientists with the Nature Conservancy and Forest Service have been raising American elms that are bred to be resistant to ...

The species suffered a mass decline decades ago. Researchers are studying how to restore disease-resistant elm trees, with the goal of increasing biodiversity and flood resilience in the process.

The North Carolina Forest Service has been receiving reports of scorched-looking elm trees throughout central North Carolina, from Davidson to Johnston counties. But Jim Slye, the service’s Forest ...

These are American elms, saplings of the magnificent trees that were once ubiquitous in New England, cathedrals of green that ...

BECKET — There’s a tiny insect new to Berkshire County that is munching on leaves, giving some trees a ghostly, wintry appearance even in the midst of summer — entirely defoliating elms. The elm ...

RENO BOTTOMS - The elm tree that towered over Andy Meier was a survivor. At 37 inches around and about 150 years old, it had so far avoided Dutch elm disease, the fungus that wiped out many of its ...

A reader of ERR's Novaator science portal noticed diseased ash and elm trees in their home yard and asked what was causing it ...