Canadian horseweed (Conyza canadensis) is a native landscape weed in temperate and tropical regions. This species has high herbicide resistance in many countries and has invasive potential within protected areas. This weed grows upright, with no branches, and can be up to 6 feet tall.

• Scientific Name: Conyza canadensis 
• Common Name: Canadian horseweed
• Seasonality: Warm, Annual
• Soil Type: Dry
• Toxicity: Non-toxic
• UF/IFAS Citrus Weed Spotlight: Horseweed

• Relevant Resources

  USDA Plant Profile

  Invasive Plant Atlas

  Invasive Species Compendium

  International Herbicide-Resistant Weed Database