Weed Control


Weed Control

Weeds and other vegetation like to make their home along roadsides.  There are a number of reasons to control roadside vegetation: motorist safety, to maintain sight lines, proper drainage, prevention of road surface erosion, as well as preventing the spread of invasive species onto adjacent properties.  Some toxic weeds can grow in areas where humans are working or enjoying recreational activities.  Serious burns and rashes due to human skin coming in contact with these weeds, as well as vision loss, are just a couple of health risks associated with toxic weeds.

It is essential that vegetation does not block traffic signs and hazard markers.  Vegetation can obstruct driver vision at intersections and block the line of sight around curves and obstruct the view of oncoming wildlife crossing the road, therefore vegetation must be treated and controlled.  Roadside delineators and traffic signs being visible are crucial to ensure motorist safety.

Weed Inspector

The main purpose of the Weed Control Act R.S.O. 1990, is to reduce the impact of noxious weeds on the industries of agriculture and horticulture.

Ken Gilpin, Weed Inspector for Lanark County, is appointed by By-Law to carry out and perform the duties, as required of him under the provisions of the Weed Control Act.  The Weed Inspector performs inspections and enforcement duties with respect to complaints regarding nuisance weeds affecting lands used for agricultural and horticultural purposes.

If you require further information, or wish to initiate an inspection by the Weed Inspector please contact the office at 613-267-1353 or toll free 1-888-9-LANARK.

What is a Noxious Weed

The Province has currently classified 25 species of weeds as noxious. 

To view the current Noxious Weeds list click on Noxious Weeds.

To view pictures of the list of noxious weeds and other Ontario weeds click on Ontario Weed Gallery.

For more answers to other frequently asked questions you can also refer to the Ministry of Agriculture & Food's Frequently Asked Questions and the Weed Control Act. 

For further enquiries contact the County of Lanark Weed Inspector at (613)267-1353 or toll free 1-888-9-LANARK.

Wild Parsnip

Wild Parsnip is an invasive plant that is increasingly common within Mississippi Mills.  The plant is found in areas such as road shoulders, roadside ditches, rail corridors, trails, and uncultivated lands.

Wild Parsnip may pose a health risk to humans.  The plant sap may cause skin and eye irritation and make the skin prone to severe burning and blistering when exposed to the sun.  The blisters typically occur one to two days after contact with the plant.  In some cases, this can result in long-term scarring of the skin.

The best way to avoid contact with Wild Parsnip is to become familiar with what the plant looks like and the proper handling techniques when dealing with the plant.

For important Safety Information on Wild Parsnip hazards, control and disposal review the Wild Parsnip - Best Practices in Ontario.

When a weed such as Wild Parsnip is declared a noxious weed, both the Municipality and members of the public are able to purchase herbicides to control it.  Use for control of noxious weeds is not considered a cosmetic use of pesticides because the plant can pose a health risk to people.  Further information is available on the Ontario Ministry of Environment and Climate Change (MOECC) website.

Residents can also contact the Leeds, Grenville and Lanark District Health Unit for more information relating to Public Health in regards to Wild Parsnip or the use of ClearView Herbicide at 613-267-4114 or visit their website at www.healthunit.org.

Roadside Spraying 

Spraying occurs from the edge of the gravel shoulder to the property limits and uses ClearView herbicide to control the growth of undesirable vegetation. The contractors performing the work are fully licensed. Spraying occurs in areas identified during weed audits.

The following locations will not be sprayed:

  • Roadside ditches maintained through either a No Spray Agreement or Adopt A Road Agreement entered into with the Municipality.
  • 10 metre buffer from freshwater habitat (boom spraying)
  • Sprayers are turned off at mailboxes or whenever a pedestrian is nearby

Landowners who do not want roadside spraying should review the No Spray options below.

Municipality of Mississippi Mills Roads to be Sprayed 

2019 Roadside Spraying Map 

2019 Public Notice Pesticide Use 

2019 Spraying List by Road Name

Anticipated Start Dates


June 5th


June 11th

Spraying Completed - 2019 Road List

Options for No Spraying - Mississippi Mills Roads

Adopt A Road

A program where groups (minimum 3 individuals) can enter into an agreement with the Municipality of Mississippi Mills to complete various vegetation management activities. 

Please complete all sections of the Adopt-A-Road Agreement and return it to the following address:

The Corporation of the Municipality of Mississippi Mills
Attn: Environmental Compliance Coordinator
3131 Old Perth Road,
Almonte, Ontario K0A 1A0

Or e-mail: tpetrie@mississippimills.ca

Phone: (613) 256-2064 ext. 235; Fax: (613) 256-4242

Once we have received your completed Adopt-A-Road agreement we will finalize your Adopt-A-Road Agreement outlining the approved road section, and approved activities.  No activities are to occur until an adoption agreement is approved in writing.

No Spray Agreement

An agreement between the Municipality of Mississippi Mills and a landowner (occupant) who takes alternative vegetation control actions to control noxious weeds within the road allowance adjacent to their lands, and therefore, the Municipality does not spray the zone.  Note that a no spray agreement form for each property must be completed.

Please complete a No Spray Agreement and return it to the following address:

The Corporation of the Municipality of Mississippi Mills
Attn: Environmental Compliance Coordinator
3131 Old Perth Road,
Almonte, Ontario K0A 1A0

Or e-mail: tpetrie@mississippimills.ca

Phone: (613) 256-2064 ext. 235; Fax: (613) 256-4242

All requests for no spraying and Adopt-a-Road should be submitted to the Municipality of Mississippi Mills on or before May 17th, 2019  

No spray requests are not guaranteed until the review process is completed and approval granted by the Director of Roads and Public Works.