These pests pose problems for your elm trees.

It's in the elm zigzag sawfly's caterpillar-like larval stage that you're likely to see it - and the distinctive damage it ...

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 ...

A new invasive species has been detected in Michigan's St. Clair County.

DALLAS — The winter freeze this February was a tough test for trees across North Texas, and we're still seeing the impact months later. If your trees appear to be dying now, there's a good chance it ...

RALEIGH, N.C. (WTVD) — An invasive insect that’s originally from East Asia has arrived in North Carolina, according to researchers at NC State. The elm zigzag sawfly, or Aproceros leucopoda, first ...

The first invasive elm zigzag sawfly in Michigan has been detected in St. Clair County, the the Michigan Department of ...

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 ...

A reader of ERR's Novaator science portal noticed diseased ash and elm trees in their home yard and asked what was causing it and what could be done to help the trees. According to Rein Drenkhan, ...