Noxious Weeds in Ontario

Table of Contents

1. Common Barberry
2. European Buckthorn
3. Bull Thistle
4. Canada Thistle
5. Wild Carrot
6. Colt's Foot
7. Dodder
8. Goat's Beard
9. Johnson Grass
10. Knapweed
11. Milkweed
12. Nodding Thistle
13. Poison Hemlock
14. Poison Ivy
15. Proso Millet
16. Ragweed
17. Yellow Rocket
18. Russian Thistle
19. Scotch Thistle
20. Sow Thistle
21. Cypress Spurge
22. Leafy Spurge
23. Tuberous Vetchling

Learn more:

• Ontario Weed Gallery
• Ontario Vegetation Management Association
• Weed Control Act, R.S.O. 1990, c. W.5.
• Publication 75, Guide to Weed Control

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