Dutch elm disease is becoming more of a concern in Alberta. 2025 Edmonton has had one elm tested positive for DED. Elm surveys are being done throughout the city all season. It only takes one piece of DED infected elm wood to cause a problem.
If you see signs of DED in your elm tree – wilting leaves in summer, branch dieback, brown streaks under the bark, please contact the hotline number in your municipality or the STOPDED hotline.
https://www.alberta.ca/dutch-elm-disease-overview
Dutch elm disease (DED) Hot line numbers
- City of Airdrie 403-200-2699
- City of Beaumont 780-929-4300
- City of Brooks - 403-501-8793
- City of Calgary - 311
- City of Camrose - 780-672 9195
- City of Chestermere – 403-207-2807
- City of Edmonton - 311
- City of Fort Saskatchewan- 780-722-9739
- City of Lacombe - 403-782-1297
- City of Leduc – 780-980-7133
- City of Lethbridge - 311
- City of Lloydminster 780-205-4600
- City of Medicine Hat – 403-529-8333 “Option 6”
- City of Grande Prairie- 311
- City of Red Deer – 403-342-8238
- City of Spruce Grove - 780-962-7584
- City of St. Albert – 780-459-1557
- Town of Stony Plain – 780-963-2469
- Strathcona County - 780-467-2211
- STOPDED – 1-877-837-ELMS (3567)
Emerald ash borer
- CFIA @ 1-800-442-2342
- STOPDED – 1-877-837-ELMS (3567)
All elm trees showing DED symptoms must be tested in the lab using the following form.
https://www.alberta.ca/dutch-elm-disease-sampling-procedures
https://www.alberta.ca/system/files/custom_downloaded_images/af-aphl-lab-sample-submission-form.pdf
Samples must be sent to the lab by a Municipality, County, MD or Special Areas representative.