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, ...

Dutch elm disease (DED) is a devastating fungal disease caused by the pathogen Ophiostoma novo-ulmi, which has significantly impacted elm populations, particularly in North America and Europe.

A tree known as the Last Ent of Affric is the "symbolic leader" of a campaign aiming to halt Dutch elm disease. The elm stands alone in Glen Affric, south of Inverness, and its location is ...