
Elm pruning ban starts April 1
The annual provincial elm tree pruning ban is around the corner.
The ban runs from Apr. 1 to Aug. 31 each year to help stop the spread of Dutch Elm Disease (DED), a fatal tree disease caused by a fungus that is spread by elm bark beetles.
The beetles are more active as the weather warms up, and they are attracted to fresh cuts on elm trees. Pruning during this time leads to an increased chance of infection, which leads to a higher risk for elm trees.
“Pruning trees before or after the ban period helps keep them healthy and better able to resist all kinds of diseases, including DED,” said a Ministry of Environment news release. “Pruning also removes the dead and dying wood where elm bark beetles breed, reducing beetle numbers.”