One tree stands out from its leafy green neighbors. Some of the tree's leaves are missing. Others are brown and eaten away as a result of "skeletonization" from the larger elm leaf beetle.

Across the eastern United States, tree communities are shifting toward fewer species in a process known as homogenization.

Dutch elm disease is the grim reaper of United States’ elm trees. Since the 1930s, it caused wilt and death for native elm species all over the country, spreading from tree to tree through root grafts ...

Purdue Landscape Report: We have received a few elm tree samples this year with a disease we do not often see, but which is relatively common: black spot of elm. This disease, also called elm ...

A few elm zigzag sawfly larvae were first found on trees in early July and were then officially confirmed by the U.S. Department of Agriculture's Animal and Plant Health Inspection Service on July 21.

-- Dan Zink, Oxbow, N.D. NDSU’s Prairie Expedition Elm is among the elm tree cultivars that’s resistant to Dutch elm disease. Special to The Forum ByDon Kinzler July 07, 2018 06:00 AM ...

Like the American elm, which used to be a common street tree in Indiana, the number of slippery elms has dwindled due to Dutch elm disease, a fungal diseased which ravaged the species in the second ...

Parmenter said he isn’t sure how the elm seed bug reached La Plata County. But Siberian elm trees that produce the seeds the bug eats are a weedy species that is cut for firewood and shipped around.