3rd new case of Dutch elm disease in Edmonton this month
Posted July 22, 2026 1:02 pm.
After going eight months without a new case of Dutch elm disease, Edmonton has now identified three new cases in the span of eight days.
The latest case: an elm tree in the Calder neighbourhood, which tested positive for the deadly fungal disease.
“The tree was in decline and identified by city crews through a visual inspection. Test results confirmed the disease,” the city said in a news release.
The tree was slated to be taken down Wednesday, as well as another tree within a one-kilometre radius. The city said that second removal was “proactive.”
“Prompt tree removal is essential to maintain the health and safety of the urban forest,” the city said.
It comes eight days after the city confirmed a tree in the Northmount neighbourhood and another in the Rossdale neighbourhood tested positive for Dutch elm disease.
There have now been 10 cases of DED in Alberta’s capital since the disease was first detected in August 2024.
The trees that previously tested positive were in the Killarney, Yellowhead Corridor East, Alberta Avenue and Glengarry neighbourhoods.
There are about 90,000 elm trees in Edmonton.
Edmontonians are asked to help limit the spread of Dutch elm disease by not bringing firewood from another jurisdiction; removing bark beetle habitat; and calling 311 if you see signs of the disease.
