Tackling Giant Hogweed: the UTRCA’s Ongoing Effort to Protect Local Ecosystems 

Upper Thames River Conservation Authority (UTRCA) Lands and Facilities staff have been hard at work managing one of Ontario’s most dangerous invasive species: Giant Hogweed. This invasive species not only threatens native species by outcompeting them but poses serious health hazards to people and wildlife due to its toxic sap.  

This spring, we’ve dedicated over 120 hours of work and treated approximately 116 acres of authority-owned property along the Thames River. This effort involves careful surveying, management and ongoing monitoring to reduce the spread of Hogweed and provide protection to our local environment.  

Because of its hazardous nature, the appropriate personal protective equipment (PPE) must be worn while managing Giant Hogweed.

We also urge the public to stay vigilant. This plant is commonly found along ditches and waterways. Exercise caution and avoid direct contact when in these areas. If you’re unsure whether you’ve spotted giant hogweed, our Giant Hogweed factsheet offers helpful identification tips and additional safety information. Our work is ongoing, and community awareness plays a vital role. For more information on invasive species visit our website. 

Giant Hogweed