Communities across Ontario, including farmers and rural residents, are being asked to help stop the spread of water soldier in Lake Simcoe. This invasive aquatic plant can quickly grow in shallow water and along shorelines, reducing water access and disrupting daily activities.
Many of our readers are avid outdoor enthusiasts, so we thought we would share the information.
Water soldier are not only harmful to the environment but also affect water use. Its sharp edges can injure people, and thick plant growth can block waterways used for recreation and farm-related purposes. Protecting water resources is important for both communities and agriculture.
Lake Simcoe plays a key role as a major water source in southern Ontario. It supports thousands of residents and surrounding farming areas. However, the spread of water soldier has become a major concern since it was first detected in 2024.
“Monitoring and management planning efforts by the Working Group are ongoing, but preventing the spread of water soldier relies heavily on public action. Community members play a critical role,” says Colin Cassin, Invasive Species Centre Executive Director. “Report sightings and reduce the risk of further spread by cleaning, draining, and drying watercraft and equipment after use.”
To address this issue, the Lake Simcoe Water Soldier Working Group is leading monitoring and control efforts. This partnership includes government agencies, Indigenous groups, environmental organizations, and research institutions working together to protect the lake.
Community action remains a critical part of the solution. Farmers and residents can help by cleaning, draining, and drying boats and equipment after use. Even small pieces of the plant can spread and create new infestations.
Learning to identify the plant and reporting sightings is also important. If removal is attempted, it must follow proper safety guidelines and disposal methods. The plant should never be placed back into the water.
Water soldier are illegal to use or trade in Ontario. By following simple practices, rural communities can help protect Lake Simcoe and support long-term environmental sustainability.