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Noxious Weeds in Ontario
- Ministry of Agriculture, Food, and Rural Affairs.
If you come into contact with giant hogweed, wash affected area immediately, avoid direct exposure to sunlight and seek medical advice.
Best Management Practices Ontario Guide
- All part of the poison ivy plant, including the roots, contain the poisonous resin urushiol. Contact with any broken part of the plant and becoming exposed to the sap may cause a reaction. Wash any areas of your skin you think may have come in contact with poison ivy with soap and cold water.
- Similar to Giant Hogweed, Wild Parsnip is also given the name poison parsnip because of the toxic sap that causes skin burns if skin exposed to sap is then exposed to direct sunlight.
Landowners Guide to Controlling Invasive Woodland Plants
- A weed index to help you identify plants
How you can Combat Invasive Species
- Ministry of Natural Resources and Forestry
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