Poison ivy, ragweed, and giant hogweed cause skin irritation and sometimes more serious symptoms. Seek medical attention if exposed.
Sightings of giant hogweed and other invasive species should be reported both to the province and the municipality.
Report all giant hogweed and other invasive species sightings to Ontario’s Invading Species Awareness Program by calling the invading species hotline at 1.800.563.7711.
Please report sightings of giant hogweed in the City of Greater Sudbury to Environmental Initiatives at 705.674.4455, ext. 4397 or by dialing 311.
This page was last updated September 14, 2026