Who: Friends of Malcolmson Eco-Park / City of St. Catharines

What: An application of GARLON RTU is being applied to targeted areas within the park to reduce invasive species such as Bittersweet Vine, Honeysuckle, Manitoba and Norway Maples and the Multiflora Rose. GARLON RTU is a Class 4 Herbicide that is being applied to the stumps of the invasives. It will adhere to the bark instantaneously and fully dries within one hour. It is labelled as low toxicity to non-targets (essentially a large amount would need to be ingested for any negative effects to occur.)

Aren’t pesticides/herbicides illegal under the Cosmetic Pesticide Ban of 2009?

Not for a licensed exterminator with a Forestry Exterminator license. This herbicide is also being applied under the Forestry exception under Provincial Legislation. This work will be covered under the Forestry Exception (area greater then 1 ha) using a Forestry Exterminator License. This is not cosmetic because they are controlling plants listed under the Ontario Invasive Plant Council. Please refer to slide 19 of the link for more information.


When: The contractor will give us approx. 2-3 days’ notice so the City can post appropriate signs. This will take place most likely early or mid December.

Where: The park will be closed off to the public during the time of treatment/ Approximately 4-6 Hours beginning around 9:00am. The target area Dec. 2019 is about 3 acres north of the pond.

Why: The Friends of Malcolmson Eco-Park have been working hard to restore native habitat for wildlife within the park. Part of this mission includes planting native species while eliminating the invasive ones. The invasive species outcompete the native species and essentially take over certain areas of the park. This treatment of the low-risk herbicide will make significant improvements and allow the native plant material to thrive and flourish, which will result in more native habitat for local pollinators and wildlife.

Other websites for more information:

A recent article written on the FOMEP:

Making a Case for Restoring Native Species & Ecosystems in Niagara