Noxious Weeds Profile - Colt's Foot

1. Names
2. Photos
3. Current Status
4. Poisonous/Cautions
5. Distribution
6. Growth Habit
7. Method of Propagation
8. Control
9. Other Comments
10. Related Links

• English - colt's-foot
• French - tussilage pas-d'âne
• Latin - Tussilago farfara L.

• A. Flowering shoots in early spring.
• B. Flower heads.
• C. Flower heads in seed in late spring, with young leaves.
  
  

• Ontario Weeds Act - noxious
• Other provinces - none
• Canadian Federal Seeds Act - no
• U.S. Federal Noxious Weed - no
• U.S. Noxious State Reg - Oregon

• Pub 505 - none indicated
• NE Weeds - not included
• Canadian Poison Plant - not listed
• Cornell Poison Plant - not listed

• Introduced from Europe and has naturalized in forest, fields, alongs roads, river banks, ravines thorughout southern and eastern Ontario.

• Perennial

• Seeds, Wind blown, Roots/rhizome

• Best time to control is in June-July using medium to high rates of glyphosate. 2,4-D and dicamba generally less than satisfactory. Not listed on any labels. Cutting has very little effect.

• Quite common in quarries and gravel pits and is frequently spread in this manner. It is difficult to control in this situation. Can be a problem in some crop situations but it has not developed to be as serious of a problem as once thought that it might be.

Related Links

• Noxious Weeds in Ontario
• Ontario Weed Gallery: Colt's Foot
• Ontario Vegetation Management Association
• Weed Control Act - R.R.O. 1990, Reg. 1096
• Weed Control Act, R.S.O. 1990, c. W.5