Municipal Weed Control: Lessons from Ground Zero

The report finds that Canadian municipalities can maintain acceptable weed control without toxic pesticides by shifting to cultural practices and mechanical methods, with stable budgets and supportive public attitudes.

• Municipalities have successfully managed weeds without toxic pesticides by adopting cultural practices to strengthen desired plants and using mechanical means for suppression. These practices include aeration, overseeding, fertilization, mowing, and the targeted use of line trimmers.
• Weed control budgets have remained stable following the implementation of pesticide bans. While some cities saw initial increases in labour or equipment costs, these were offset by reducing pesticide purchases and adjusting weed control goals and priorities.
• Public support for cosmetic pesticide bans is high, and residents have generally adjusted their expectations regarding the appearance of green spaces. While some complaints occur regarding spring dandelions, managers describe overall complaints as minimal.
• To manage costs and resources, municipalities have implemented differential service levels based on the visibility and use of the green space, prioritizing downtown and high-visibility areas over outlying spaces.
• Sports fields are maintained as high-priority areas through intensive cultural practices such as aeration, irrigation, and fertilization, which have proven successful in reducing weed intrusion without the use of banned herbicides.
• Permitted, lower-risk substances are used only sparingly and for specific purposes, as intensive use at a municipal scale would be cost-prohibitive. Common allowable products include iron chelate, horticultural vinegar, and corn gluten.

APA

McQuaker, R. (2018). Municipal Weed Control: Lessons from Ground Zero. Canadian Association of Physicians for the Environment. https://cape.ca/wp-content/uploads/2018/10/Municipal-Weed-Control-Report-October-11-2018-.pdf

Chicago

McQuaker, Randall. Municipal Weed Control: Lessons from Ground Zero. Canadian Association of Physicians for the Environment, 2018. https://cape.ca/wp-content/uploads/2018/10/Municipal-Weed-Control-Report-October-11-2018-.pdf.

Wikipedia

{{cite report |last1=McQuaker |first1=Randall |title=Municipal Weed Control: Lessons from Ground Zero |publisher=Canadian Association of Physicians for the Environment |date=October 2018 |url=https://cape.ca/wp-content/uploads/2018/10/Municipal-Weed-Control-Report-October-11-2018-.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{mcquaker2018municipal, author = {McQuaker, Randall}, title = {{Municipal Weed Control: Lessons from Ground Zero}}, institution = {Canadian Association of Physicians for the Environment}, year = {2018}, month = oct, url = {https://cape.ca/wp-content/uploads/2018/10/Municipal-Weed-Control-Report-October-11-2018-.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }