The Community Services Department is responsible for weed control on public property. The City of Morden Policy CS-001 covers all the aspects of Weed Control. For the full copy of this Policy click here.

The City is committed to ensuring that, when required, environmentally friendly products only will be applied in areas frequented by the public, such as parks, pathways, boulevards, and sports fields.

Ongoing research of improved products continues by the City of Morden Parks Manager, and introduction of these products will be incorporated whenever possible. All aspects of the weed control program are carried out within the annual operating budget.


Public notice is hereby given that the City of Morden may conduct the following Pesticide Control Programs during 2018. An Integrated Pest Management Plan (IPM) has been developed for the City and will act as a guide for pest prevention, treatment, and management. One of the goals of the IPM is to reduce the use of chemical controls by means of using preventative, mechanical, and biological controls. The City will adhere to provincial legislation and regulations pertaining to the use and implementation of a pesticide program.

  1. For the control of noxious weeds within the City of Morden and in accordance to the Noxious Weed Act, Environment Act, and the Non-Essential Pesticide Use Regulations between May 1st and October 31st the following herbicides may be used:
  • Fiesta (Iron HEDTA)–
  • see the Fiesta – INFORMATION SHEET or watch the video below.
    • Par 3 (mecocorp-p, 2,4-D, dicamba)
    • Round-up (Glyphosate)
  1. To control larval mosquitoes in stagnant/standing water, within the City of Morden and 1 mile beyond the city boundary on public property, rights-of-way, and ditches between May 1st to October 1st the following biological larvicides may be used include:
    • Aquabac (Bacillus thuringiensis var. israelensis –Bti)
  2. To control adult Culex Tarsalis mosquitoes carrying WNV along streets and lanes, City parks, golf courses, cemeteries and rights-of-ways within the City boundaries between May 1st and October 31st by way of ultra-low volume mist sprayers the following insecticide may be used:
    • DeltaGuard 20ew
  3. To control elm bark beetles, the carrier of Dutch Elm Disease, by spraying Pyrate (chlorpyrifos) onto the lower 50cm of elm trees on both public and private property from approximately June 1st until October 15. Additional Public Notice will be provided prior to basal spraying program.
  4. To control other insect pests between May 1st and October 31st the following may be used:
    • Safer’s Trounce Insecticidal Soap (potassium salts)
    • Dipel 2XDF (Btk)
  5. To prevent Dutch Elm Disease the following fungicide will be injected into the root flare of American Elm trees.
  • Arbotect 20-S
  1. To control Emerald Ash Borer, a system insecticide containing TreeAzin (Azadirachtin) will be injected into the basal area of Ash trees.

Any person may, within 15 days after this notice is published, send a written submission to Manitoba Conservation regarding the above control program or register with the department their written objection to the use of pesticides next to their property to:

Manitoba Conservation and Water Stewardship

Pesticide and Hazardous Waste Section

Suite 160, 123 Main Street

Winnipeg, Manitoba R3C 1A5


Any person who may wish to discuss the control policy may also contact the City of Morden, Parks and Urban Forestry Department at 204.362.3999 or email sdias@mordenmb.com