Where There’s Room to Grow

County Council

Alberta Dutch Elm Disease Awareness Week June 22 - 28

Dutch Elm Disease Awareness Week is recognized annually throughout the province of Alberta from June 22- 28. The intent is to raise awareness on how dangerous Dutch elm disease (DED) is, the importance of elm trees to our communities, and that DED can be prevented. At present, Alberta has the largest DED-free American elm stand in the world, and it is important to protect this valuable resource. The Society to Prevent Dutch Elm Disease (STOPDED) is asking for your assistance to save our beautiful elm trees from this deadly disease.

DED is caused by a fungus that clogs the elm tree's water conducting system, causing the tree to die. The fungus is primarily spread from one elm tree to another by three species of beetles, the smaller European, the native and the banded elm bark beetle. The beetles are attracted to weak and dying trees, which serve as breeding sites for the beetles. Once the beetles have pupated and turned into adults they leave the brood gallery and fly to healthy elms to feed, thus transporting the fungus on their bodies from one tree to the next. Monitoring for the beetles is done annually throughout the province by STOPDED. The smaller elm bark beetles have been found throughout the province in low numbers and now the banded elm bark beetle is found in larger numbers throughout the City of Medicine Hat and area. For this reason we must be even more vigilant.

Leaves on a DED-infected elm will wilt or droop, curl and become brown. This appears in mid-June to mid-July. Leaves on trees infected later in the season usually turn yellow and drop prematurely. Leaf symptoms are accompanied by brown staining under the bark. All DED suspect elms must be tested in a lab so if you think you see DED symptoms call the hotline.

During DED Awareness Week, please take a moment and find out how you can help save our elms.

What can you do?

  • Be aware of the Alberta elm pruning ban between April 1and September 30. The beetles are most active at this time and can be attracted to the scent of fresh tree cuts, possibly infecting a healthy elm.
  • Keep your elm trees healthy, and vigorous.
  • Water elms well from April to mid-August. To allow the tree to harden off for the winter, watering should be stopped mid-August followed by a good soaking or two before freeze-up.
  • Only between October 1 to March 31, remove dead branches and trees as they can provide beetle habitat.
  • Dispose of all elm wood immediately by burning, burying or chipping.
  • Report all suspect trees to the DED Hotline at 1-877-837-ELMS. A confirmed DED tree must be removed immediately to prevent further spread.

Do Not!

  • Do Not store elm firewood! It is illegal!
  • Do Not transport elm firewood into or within Alberta!
  • Do Not prune elms between April 1st and September 30th. The beetles are active during this time, they will be attracted to the scent of fresh tree cuts, possibly infecting a healthy tree.

Our elms are a treasure that we cannot afford to lose.

Contact

For more information or to connect with STOPDED:

Website
Phone: 1-877-837-ELMS (3567)
Email: stopded@shaw.ca

Keeping Alberta Dutch Elm Disease and Emerald Ash Borer Free

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Contact Us

Wheatland County
242006 Rg. Rd. 243 
Highway 1 RR 1
Strathmore, Alberta
T1P 1J6

Ph: (403) 934-3321
Fx: (403) 934-4889
 
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Monday - Friday
8 a.m. - 4:30 p.m.

Upcoming Events

August 5, 2019
8:00 AM - 4:30 PM
Heritage Day
August 13, 2019
9:00 AM - 4:30 PM
Municipal Planning Commission (MPC)
August 20, 2019
9:00 AM - 4:30 PM
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