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Image of an elm tree. (Photo supplied by the City of Lethbridge)

Residents asked to watch for Dutch Elm Disease warning signs

Aug 12, 2022 | 6:00 AM

LETHBRIDGE, AB – Residents in Lethbridge are being asked to check trees on their property and in their neighborhood for signs of invasive species or disease.

One of the diseases of concern for trees is Dutch Elm Disease (DED). August is the time of the year where physical signs of the disease are most likely to be seen and most obvious. The City of Lethbridge said it is critical to diagnose DED and act quickly to treat it.

Typical DED symptoms include yellow, droopy leaves, leaves that fall off prematurely and succulent branches on the stem that wilt and turn brown.

Urban Forestry Technician Lindsay Bell said, “Examining our local trees helps us to identify signs of disease early, and may help to stop the spread.”

Bell added, “With nearly 50,000 trees in our urban forest, having residents report what they’re seeing is incredibly helpful to our team and cannot be underestimated.”

Residents are asked to check local parks, gardens, backyards and vehicles for any unwelcome pests or signs of disease. Anyone who spots any signs is asked to contact 311.

Bell said, “With the heat we have been experiencing this summer our urban forest is under tremendous stress.”

“It is critical that we address trees that are potentially infected and take action as soon as possible.”

Citizens in Lethbridge are also reminded to keep their trees watered and healthy, as stressed trees are more susceptible to disease. Additionally, residents are asked to not transport firewood back from camping trips. More information on DED is available at the City of Lethbridge website.

READ MORE: City informing residents of Dutch Elm Disease