Weeds in Cochrane

We know your garden is your pride and joy. Town parks and public spaces are ours. That’s why the Town of Cochrane is working so hard to protect our parks and open spaces from invasive species. Check out the province’s Weed Control Act online (includes pictures) and the Alberta Invasive Species Council for details on controlling noxious weeds and destroying prohibited weeds on your property.

Controlling Invasive Species

You can help control invasive species in Cochrane:
  • On your property: If you see a plant designated as a weed on your property, remove it by pulling, digging, mowing or treating it with an appropriate product so that it does not spread. Local garden centres can advise on appropriate products. The Nan Boothby Memorial Library has helpful gardening resources; you can also find help online at Wild About Gardening, among others.

    Under the Alberta Weed Control Act, you are responsible for controlling noxious weeds and destroying prohibited weeds on your property. The Town also requires you to control dandelions and messy yards under the Nuisance and Unsightly Premises Bylaw. Fines start at $300.
  • On public property: If you see noxious weeds or prohibited weeds on public property within town limits, please notify Parks and Open Spaces at 403-851-2590.

Complying With the Alberta Weed Control Act

Parks and Open Spaces follows the Town’s Pest Management Administrative Directive.  It is used as a guide to ensure all reasonable steps are taken to protect and enhance our natural, recreational and non-recreational environments through an integrated pest management and vegetation approach.

This integrated approach combines cultural and mechanical practices such as fertilizing, cutting, trimming, aerating, etc.,with chemical practices such as herbicide applications. We try to minimize chemical application; when we do feel it necessary to treat, we spot-spray as much as possible, only spraying the areas affected by the weed. As well, application is limited to one application per site per target pest annually.

The Town only uses products registered and approved by Health Canada for use in residential areas. Products used by the Town may be the same as products available for sale, but with a different name. For example, Par III (used for dandelions) has the same ingredients as Killex or Trillion. Use is advertised in advance of seasonal application and signs are posted prior to and during application.


In general, dandelions are targeted in the spring in local parks, greenbelts and sports fields as required.  While thistle and other noxious and prohibited noxious weeds are targeted in July and August throughout the town. Parks and Open Spaces monitors and treats any unexpected weed throughout the season.

The Town requires you to control weeds in your yard under the Nuisance and Unsightly Premises Bylaw or the Alberta Weed Control Act.

Additional Information

For more information, please contact Parks and Open Spaces at 403-851-2590.