Weed Control

Weed Inspector

The Weed Inspector for the United Counties of Leeds and Grenville is appointed to carry out and perform the duties required of him/her under the provision of the Weed Control Act (Agricultural Complaints). The Weed Inspector is also appointed under Section 11 of the Municipal Act to carry out and perform inspection and enforcement duties with respect to complaints regarding nuisance weeds affecting human health, safety and well-being.

The Weed Inspector is authorized to proceed with remedial action as authorized by Section 446 of the Municipal Act and when necessary according to the Weed Inspection procedures.

2026 Roadside Spraying

Vegetation control along the County roadsides is an important part of road maintenance. It ensures clear sight lines for signs, intersections and roadside wildlife, promotes drainage and drying and prevents the establishment of trees and brush in the right of way.  Controlling noxious and invasive weeds is another objective of the County vegetation management program.

Roadside herbicide spraying will be completed in May and June along selected sections of County Roads in the West half of the Counties (Roads 2, 3, 4, 5, 27, 30, 32, 33, 34, 35, 37, 40, 42, 46 and 47.) as well as selected Township Roads in the municipalities of Athens, Augusta, Edwardsburgh/Cardinal, Elizabethtown-Kitley, Front of Yonge, Leeds and Thousand Islands, Merrickville-Wolford and North Grenville and all County guide rails, except for those in Rideau Lakes.(See 2026 Spray Map). 

The herbicide will selectively kill weeds but not the grasses and is approved for use on roadsides under the public works exemption of the cosmetic pesticide ban. Spraying of the herbicide will be completed by a qualified contractor licensed by the Ministry of the Environment and Climate Change under requirements of the Pesticides Act.  Only unmaintained ditches will be sprayed with herbicide, maintained yards and ditches will not be sprayed.   

Guide rail weed spraying will also be completed in May and June along all the County Roads except for those in Rideau Lakes Township.  Herbicide will be used to control all vegetation within one metre of the guide rail.   The spray is applied to only a narrow strip along the guide rail.

A public notice of this pesticide use will be advertised in the local papers and on the County website. 

Property owners who do not want the unmaintained ditch in front of their property sprayed can post “No Spray” signs at the start and finish of their property.  These signs must be at least 30 cm x 60 cm (1 ft x 2 ft) and be easily read from the shoulder of the road.  You can make your own sign or the Counties have a limited number of these signs available for pick up at the Counties office in Brockville.  To obtain one of these signs or for more information please contact the Counties at (613) 342-3840 ext. 2425.

For further information call (800) 770 -2170 / (613) 342-3840 ext 2425

Contact for Weed Inspector

Anyone having information on specific locations where noxious or nuisance weeds are posing a public health risk should contact the Weed Inspector, at the Counties Noxious & Nuisance Weed Control Office - roads@uclg.on.ca

Fact Sheets on Noxious and Invasive Weeds in Leeds Grenville