When no signs of life were left, university officials took the “last resort” and decided to remove the dead tree on May 4.

However, almost all mature American elm trees have been killed in the last 50 years by Dutch elm disease, which is caused by a fungus, Ophiostoma novo-ulmi, introduced from Asia. Elm bark beetles ...

On the St. Paul campus of the University of Minnesota, rows of tiny elm trees sprout in a test field run by University researchers. These elms are a series of new trees cloned by the University that ...

Orange spray paint signifies death for some stately elm trees on the University campus this summer. The cause is Dutch elm disease, an ailment with a notorious history in the Twin Cities. In 1977, ...

Unfortunately, it is now the time of year to put the pruners away to prevent the possibility of Dutch elm disease and oak wilt from infecting your trees. Neither elm nor oak trees should be pruned ...

Over 400 nonnative pests have been introduced since the 1800s, with early tragedies that included the Chestnut blight (1904), which wiped out the American Chestnut, and Dutch Elm Disease ...