For much of the 19th and early 20th centuries, American elms were more than just trees. They were defining features of the nation\u2019s streetscapes, with tall, arching branches creating shaded tunnels that lined city streets and small-town avenues.<\/p>\n\n\n\n
Today, however, these iconic trees are far less common. Dutch elm disease decimated much of the population, and a new threat has emerged: the elm zigzag sawfly. This small, invasive pest is spreading across North America, feeding on elm leaves and adding a new layer of stress to already vulnerable trees.<\/p>\n\n\n\n
Efforts to restore elm populations have led to the development of disease-resistant varieties designed to withstand Dutch elm disease. These new elms offer hope for the species, but the arrival of the elm zigzag sawfly complicates restoration efforts, affecting not only elms but also other species.<\/p>\n\n\n