Dutch Elm Disease in Winnipeg: What to Know Before Removing a Tree

Winnipeg is home to one of the largest surviving urban elm canopies in North America — which is exactly why the city takes Dutch Elm Disease (DED) so seriously. If you've got a mature elm on your property and something looks off, there's a right way and a wrong way to handle it, and getting it wrong can mean fines or a faster spread of the disease through your neighbourhood.

What is Dutch Elm Disease?

DED is a fungal disease spread by elm bark beetles. It blocks the tree's water-conducting tissue, and once a mature elm is infected, it usually can't be saved. The bigger risk is the beetles spreading the fungus to healthy elms nearby — which is why fast reporting and proper disposal matter so much more than with most other tree issues.

How to spot the signs

• Wilting, curling, or yellowing leaves in the upper crown, usually starting in early-to-mid summer
• Whole branches ("flags") turning brown while the rest of the tree still looks healthy
• Dark streaking under the bark of affected branches
• Small beetle tunnels (galleries) visible under peeling bark

One flagged branch doesn't always mean DED — drought stress and other issues can look similar. But it's worth having it checked rather than waiting to see if it spreads.

What to do if you suspect DED

1. Report it to 311. Suspected DED on any elm — boulevard or private property — should be reported to the City of Winnipeg so it can be inspected and tracked.
2. Don't prune it between April 1 and July 31. This is the elm bark beetle's peak flight period, and fresh pruning cuts release a scent that attracts them. Manitoba restricts elm pruning province-wide during this window.
3. Don't move the wood. Elm firewood or logs with bark still attached can carry beetles to a new area. If wood needs to be disposed of, it generally has to be debarked, burned, buried, or chipped — not stacked in a yard or hauled somewhere else.

Why hire a licensed local crew for elm removal

A crew that works in Winnipeg regularly already knows the reporting process, the pruning restrictions, and how to dispose of infected wood properly — so you're not the one left figuring out the rules while a dying tree sits in your yard. It also means the removal is done safely: dead elms can be structurally unpredictable, and a large one coming down badly near a house, fence, or power line is a real risk.

If you're weighing removal against the cost, our Winnipeg tree removal price guide breaks down what affects the quote.