What are invasive species?
Invasive species are plants, animals, and micro-organisms that are found outside of their natural range, and whose presence poses a threat to environmental health, the economy, or society (Government of Canada, 2004).

The Ontario Ministry of Resources and Forestry, in collaboration with Ontario non-profit organizations, is actively working to track and manage existing invasive species, while monitoring for the introduction of new species.

The following is a list of some of the invasive plants that can be found in Ontario today. For more information on these plants and how to manage them, check out our Best Management Practices, Grow Me Instead Guide, and Technical Documents, available through our Resources page.