Two cases of a disease fatal to elm trees were recently discovered in Lethbridge. Dutch elm disease is a fungus and will kill an elm if infected, says Janet Feddes-Calpas, executive director of the Society to Prevent Dutch Elm Disease, a non-profit organization. But in early August, two elm trees growing side by side in Lethbridge tested positive for the fungus. As to how the trees got infected, Feddes-Calpas says the affliction can spread from tree to tree by elm bark beetles or by root grass. Pruning elm trees, like ones pictured above in Saskatoon, Sask., helps prevent the spread of Dutch elm disease.

Source: CBC News August 31, 2020 23:03 UTC