Pesticide and herbicide spraying in your community

The City currently applies some herbicides to control dandelions and other broad leaf weeds. We have established thresholds to determine when to conduct treatments, based on type of site and frequency of use. All sites are assessed prior to treatment to ensure the number of weeds exceed our thresholds.

We apply herbicides more often to sport fields, as they have a high use and too many broad leaf weeds can cause safety issues for users and threaten the health of the turf. For other areas, we apply at a lower frequency, as they have a higher tolerance for weeds.

The City takes the health and well-being of citizens and green spaces seriously, so all herbicides and pesticides are carefully chosen and applied to be the least toxic to off-target plants and animals. Furthermore, all pesticides and herbicides are fully certified by both the federal and provincial governments.

Notification and application signs will be posted in the community before, during and after any necessary applications. Herbicide is not applied within 10 metres of a playground unless the entire area is closed to the public and school sites do not receive applications while students are in attendance. There are also a variety of pesticide-free parks in Calgary. 

We also use some alternative weed management techniques, including using goats to manage Canada thistle and different methods of dandelion control. We continue to explore new techniques throughout the year.

NOTE: applications are weather dependent and may not take place as scheduled.

Herbicide Notification for the week of June 9, 2025
Community - Notable Park - Site Specific Location Community Code Quadrant Description of Work
Arbour Lake  ARB NW Transit Broadleaf Weed Control
Beddington BED NW Broadleaf Weed Control
Bowness BOW NW Transit Broadleaf Weed Control
Brentwood BRE NW Transit Broadleaf Weed Control
Cambrian Heights CAM NW Broadleaf Weed Control, Shrub Beds
Citadel CIT NW Transit Broadleaf Weed Control
Collingwood COL NW Non Selective-Hard Surfaces
Dalhousie DAL NW Transit Broadleaf Weed Control
Hamptons HAM NW Transit Broadleaf Weed Control
Hawkwood  HAW NW Transit Broadleaf Weed Control
Highwood HIW NW Broadleaf Weed Control, Shrub Beds
Houndsfield HOU NW Transit Hard Surfaces 
Inland Athletic Park 02F201 NW Selective - Rugby Fields       Non Selective - GeoGlyphs
Mount Pleasant MOP NW Broadleaf Weed Control
Royal Vista  RYV NW Non Selective-Hard Surfaces
Thorncliff THO NW Non Selective-Hard Surfaces
16th Ave: 14St NW to 5St NE N/A NW/NE Centre Median Vaults Weed Control
Abbeydale ABB NE Broadleaf Weed Control, Shrub Beds
Bridgeland BRD NE Broadleaf Weed Control
Crescent Heights CRE NE Broadleaf Weed Control
Country Hills Village CHV NE Non Selective-Hard Surfaces
Horizon HOR NE Broadleaf Weed Control, Shrub Beds
Huntington HUN NE Transit Broadleaf Weed Control
Livingston LIV NE Broadleaf Weed Control
Marlborough MRL NE Broadleaf Weed Control, Shrub Beds
Marlborough Park MPK NE Broadleaf Weed Control, Shrub Beds
Mayland Heights MAL NE Broadleaf Weed Control
Pineridge PIN NE Broadleaf Weed Control, Shrub Beds
Redstone RSN NE Non Selective-Shrub Beds
Renfrew REN NE Broadleaf Weed Control
Rundle RUN NE Broadleaf Weed Control, Shrub Beds
Saddletowne SAD NE  Transit Hard Surfaces 
Vista Heights VIS NE Broadleaf Weed Control, Shrub Beds
Westwinds WES NE Transit Broadleaf Weed Control
Winston Heights WIN NE Broadleaf Weed Control
Dover DOV SE Broadleaf Weed Control
Elliston Park 09Q SE Broadleaf Weed Control
Forest Lawn FLN SE Broadleaf Weed Control
Ralph Klein Park 12B SE Broadleaf Weed Control
Douglasdale DDG SE Non Selective-Hard Surfaces
Forest Lawn FLN SE Broadleaf Weed Control
Belmont BLM SW Non Selective-Shrub Beds
Britannia BRT SW Shrub Bed Weed Control
Bridlewood BRI SW Non Selective-Shrub Beds
Evergreen EVE SW Broadleaf Weed Control
Meadowlark Park MEA SW Shrub Bed Weed Control
Parkhill PKH SW Broadleaf Weed Control, Shrub Beds
Shawnee Slopes SHS SW Non Selective and Broadleaf Weed Control
Shawnessy SHN SW Broadleaf Weed Control
Silverado SVO SW Non Selective and Broadleaf Weed Control
Optimist Athletic Park GDL SW Non Selective and Broadleaf Weed Control
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