Identification Resources
Provincial Weed Identification
- Integrated Pest Management Images (New Brunswick)
- weedinfo.ca (Ontario)
- weedsbc.ca (British Columbia)
Common weeds of the northern United States and Canada by Gerald A. Mulligan:
- Common weeds of the northern United States and Canada
- Common plants of the northern United States and Canada reported to have caused poisonings, a dermatitis or hay fever in humans
- Plants of Canada and the northern United States that are poisonous to livestock, or that have tainted animal products
- Additional information on hay fever plants