Weed Control

Weed sign

Roadside Spraying Program

Roadside spraying in SDG Counties takes place in May and June of each year.  Spraying occurs from the edge of the gravel shoulder to within one metre of the property limits and uses selective, Government of Canada-approved herbicides to control the growth of undesirable vegetation. The contractor performing the work is fully licensed.  Spraying occurs in areas identified during regular weed audits.

No-Spray Signage

If you do not want the right-of-way in front of your property to be treated:

  • You must post “NO SPRAY” signs (like the one above) at the start and finish of your property.
  • The “NO SPRAY” signs must be at least one foot by two feet and located three feet from the edge of the gravel shoulder. Signs must be one foot above any vegetation so that it is easy to see from the road. 

Spraying will not occur if the ditch is mowed on a regular basis (maintained as a lawn).  To ensure that spraying does not occur, we recommend you install a sign regardless of how the ditch is maintained.

To help us keep track of your area of concern please identify where you've installed a "No Spray" sign on this map: 


Maps of roads that will be sprayed


Guide Rail Spraying Program

SDG Counties will be completing limited guide rail spraying where health and safety concerns prevent staff from weed trimming.  This work will take place through the month of June and make use of non-selective herbicides. 


Current Progress (2024)

Roadside spraying is expected to start on  May 9, 2024.   The daily  progress log can be found here: DAILY LOG.

Guide rail spraying is expected to start in June.


Vegetation management in SDG Counties

SDG Counties is required to keep its roadsides free of undesirable weeds and maintained in a responsible manner.  Transportation Services manages roadside vegetation by mowing, brushing, tree-cutting and weed-spraying.  In the spring, SDG Counties will spray areas where a significant growth of noxious weeds is occurring.  SDG Counties also mows unmaintained ditches from the shoulder of the road to the fence line once per year (depending on the steepness of the ditch and weather conditions). Mowing begins in June and finishes in October.  Tree and brush trimming occurs from spring to fall.

Other Links

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