This summer, we’re working to improve ecological health in our parks and natural areas by removing invasive plant species like buckthorn and dog strangling vine.
Removals take place in summer and fall using mechanical and herbicide methods. The work for each site takes three days to complete, weather permitting. During removals, park facilities and most trails will remain open, however, we ask that you avoid marked work areas until signs are removed.
Dates for specific sites are added as they become available.
Buckthorn removals, summer 2019
- Bailey Park, June 14-18, complete
- Marksam Park, June 17-21, complete
- Crane Park, June 25-28, complete
- Margaret Greene Park, July 8-9
- Peter Misersky Park, July 10-11
- Westiminister Woods, July 10-15
Dog strangling vine removals, summer 2019
- Eramosa River Park, June 27 and July 3
- Preservation Park, June 27-28, complete
- Pineridge Trail, June 27, complete
- Dunhill Place Park Trail, June 27, complete
- E. Hamilton Park Trail, June 27, complete
Fall buckthorn removals, fall 2019
- Springdale Park
- Ellis Creek Natural Area
- Mitchell Woods
- Ridegway Natural Area
- Joe Veroni Park
- Silvercreek Park
- Centennial Park
- Norm Jary Park
- Riverside Park
- Elmira Park
- Edinburgh Road North Natural Area
- Eastview Community Park
Why we remove invasive species from parks and natural areas
Dog strangling vine and buckthorn are both invasive species that are not native to Ontario. Invasive species crowd out native species, threaten ecological integrity of parks and natural areas and reduce habitat for wildlife. Removing both invasive species before they establish and spread protects our parks and natural areas.
There are some exemptions available to municipalities under the Pesticide Act that allow us to use pesticides. We assess our needs for pesticides on a case-by-case basis, and only use them for forestry and natural resource management where native ecosystems are threatened. We never use pesticides for cosmetic reasons.
How we’re removing dog strangling vine and buckthorn
We will use machinery and herbicide to remove buckthorn and dog strangling vine from parks and natural areas.
We assess our parks and natural areas regularly and in many cases, mechanical methods alone are not effective. Herbicide is chosen for its overall benefit to the natural area. These benefits include:
- Less disruption to the surrounding plants and wildlife that machinery would cause
- A better chance of preventing the plants from resprouting, lessening the chance of disturbing the area with further removals
Garlon™ RTU will be used to control the buckthorn. Arsenal® will be used to control dog strangling vine.
These products are registered for use in Canada and have been tested to ensure minimal risks to human health and the environment. Licensed applicators will apply Garlon™ or Arsenal directly onto stems of buckthorn or dog strangling vine as appropriate. Using a targeted application means we will use less and protect surrounding plants.
For more information on Garlon™ or Arsenal® visit the Canadian Pest Management Regulatory Agency’s (PMRA) website or download their app, Pesticide Labels, for on the go information.
Stay out of the work area when signs are present
Both Garlon™ and Arsenal® have a low exposure risk to people and animals, however, the treatment zones will be closed to pedestrians during herbicide application. Please avoid entering the treatment area until signs are removed.
For more information
Dave Beaton, Program Manager
Trails and Natural Area Stewardship, Parks and Recreation
City of Guelph
519-822-1260 extension 2761