ST. PAUL -- Since 1999, the University of Minnesota has been cooperating with the Minneapolis Park and Recreation Board to evaluate and select elms for use in Minnesota. Many new Hybrid and American ...

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 ...

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 ...

COLUMBUS, Ohio (WKRC) - A researcher recently discovered a population of an invasive pest species in two different parts of Ohio. While inspecting the area, the researcher found that the elm zigzag ...

Dutch elm disease was introduced to the United States in the early 1920s. It quickly decimated our American elms, killing hundreds of thousands of trees. The disease first appeared in Kansas in 1957 ...

Getting your Trinity Audio player ready... Dutch elm disease has been reported back in Denver after more than a decade of its absence. The Denver forestry office discovered the disease last month in ...

The American elm (Ulmus americana) was once a common sight on the Upper Mississippi River, but Dutch elm disease, or DED, has killed many trees. DED is an invasive fungal pathogen that is spread by ...

Some trees and shrubs have a bad reputation for being susceptible to diseases: lilacs to powdery mildew, junipers to juniper tip blight, flowering crabapples to apple scab, and elms to Dutch elm ...

Answer: I’m glad you’re asking this question when these weedy, invasive trees are small and relatively easy to control (emphasis on the “relatively”). We all know how precious shade is in New Mexico, ...

Elm-lined streets were once ubiquitous in America. The trees’ success throwing beautiful, shady canopies over urban environments made them one of the most popular to plant in the country. Then a ...