If you’ve been eyeing the branches of your backyard elm, the wait to prune them is almost over.
The province’s annual ban on elm tree pruning, in place from April 1 to Aug. 31, lifts Sunday at midnight. The measure is designed to reduce the risk of spreading Dutch elm disease, a fatal fungus carried by elm bark beetles. Fresh pruning cuts made during the ban period can attract the insects and spread the disease to otherwise healthy trees.
The Ministry of Environment says pruning in fall has several benefits. With leaves still attached, dead or diseased branches are easier to spot. Removing them not only improves the tree’s health but also makes it less attractive to elm bark beetles and other pests.
Officials note proper pruning is critical, as poor technique can damage trees or contribute to disease spread. Commercial tree pruners must be provincially certified or work under the supervision of someone who is.
Elm wood must also be disposed of promptly at designated municipal sites, often landfills. Storing elm firewood is illegal because it can harbour beetles.
Anyone who suspects a tree may have Dutch elm disease can call the Ministry of Environment’s inquiry centre at 1-800-567-4224.