The Town of Innisfil works with Green Stream Lawn & Vegetation Management to manage and control invasive Phragmites in our stormwater facilities and natural areas. This work helps protect local ecosystems, improve stormwater performance, and support biodiversity across our community.
Why control Phragmites
Phragmites australis (also called European Common Reed) is one of Ontario’s most aggressive invasive plants. It spreads quickly through underground roots and dense stands, which can:
- Crowd out native plants and wildlife
- Reduce habitat for turtles, frogs, and pollinators
- Change how wetlands drain and function
Without management, Phragmites can take over wetlands and stormwater ponds, limiting water flow and harming the health of our natural systems.
How we manage Phragmites
We use a science-based, integrated approach that follows provincial Best Management Practices and guidance from the Invasive Phragmites Control Centre and Ministry of the Environment, Conservation and Parks (MECP). Our approach includes:
Targeted herbicide treatment
Licensed professionals apply approved herbicide products (glyphosate or imazapyr) at the right time of year for best results. These products are approved by Health Canada, which has confirmed that, when used as directed, they do not pose unacceptable risks to people or the environment.
Mechanical cutting and mulching
After treatment, plants are cut and mulched to prevent regrowth and help native vegetation return.
Monitoring and follow-up
Sites are reviewed regularly to assess progress and guide any further action needed.
Alternative methods like cutting alone, tarping, or grazing have been tested but are not effective long-term because they do not remove the root system.
Public safety measures and notification
The Town operates under a Permit to Use a Pesticide (PUP) issued by the MECP. This ensures all activities follow strict environmental and safety standards, including:
- Site-specific assessments and buffer zones
- Use of only federally approved products
- Application by licensed contractors
- Weather and timing conditions to prevent drift or runoff
Residents living adjacent to treatment areas receive advance notification through direct letters and clearly posted on-site signs. These notices include details about the work being done, safety guidelines, and contact information for questions.
Private property
Spraying ONLY takes place within controlled areas and away from property lines. In some cases, nearby landowners may be offered the option to include their property in the treatment to help control Phragmites more effectively across the area. Private property is treated only after the landowner has provided written permission.