American elms are elegant and beautiful native North American trees. Sadly, their numbers have been decimated by Dutch elm disease, which is caused by a pathogenic fungus called Ophiostoma novo-ulmi.

Brown University’s 155-acre campus is home to thousands of trees and is recognized for its impressive American elm collection. Last year, the campus lost an iconic community fixture, an elm tree ...

The concepts, techniques, and gene cassettes we develop for the American chestnut will have broad applications in managing diseases affecting other important tree species such as Dutch-elm disease and ...

Leaves are probably the most common feature used to identify trees. But in winter, when so many trees have dropped their ...

Video | An elm tree in Brattlebrook Park is protected from Dutch Elm Disease by Elm Watch. PITTSFIELD — It's been a while since Priscilla Rafuse would play in Brattle Brook Park under the giant ...

From gum and tulip trees to silver oaks, red maples and the rare but glorious American elm, Kelley is always on the lookout for a gem of a tree. Kelley, 36, grew up in Ithaca and is based in ...

Throughout the state, Minnesotans are still noticing native American elms falling prey to Dutch Elm Disease, one of the most widely known tree diseases, affecting elms worldwide. Fortunately ...