Annual nightshades
- Annual broadleaf
- Unaffected by light frost and won’t dry out quickly in the fall
- Germinate, flower and produce mature seeds within six-week period
- Photo courtesy of weedinfo.ca
Related products: Fierce, TriActor, Enforcer M and Bifecta
Canada thistle
- Perennial broadleaf
- Reproduces by seed and spreading underground roots
- Photo courtesy of weedinfo.ca
Related products: Enforcer M, Estaprop XT, Boost M
Common ragweed
- Annual broadleaf
- One of the most abundant weeds in cultivated fields in southern Ontario, but rare in northern and northwestern parts of the province
- Multiple resistance to Group 2, Group 9 and glyphosate confirmed in Ontario in 2012
- Photo courtesy of weedinfo.ca
Related products: BlackHawk, Chaperone, Fierce, TriActor, Enforcer M, Estaprop XT, Boost M, Valtera, Bifecta
Dandelion
- Perennial broadleaf
- Found throughout Ontario in every crop and habitat
- Photo courtesy of weedinfo.ca
Related products: Fierce, TriActor, Chaperone, Estaprop XT
Giant ragweed
- Annual broadleaf
- First glyphosate-resistant weed in Canada, found in Essex County, Ontario in 2008
- Multiple resistance to Group 2 and glyphosate reported in 2011
- Photo courtesy of weedinfo.ca
Related products: BlackHawk , Estaprop XT, Boost M and TriActor
Green pigweed
- Annual broadleaf
- Abundant in southwestern Ontario
- Resistance reported to Group 2 and Group 5
- Photo courtesy of weedinfo.ca
Related products: BlackHawk, Fierce, TriActor, Bifecta and Valtera
Lamb’s-quarters
- Annual broadleaf
- Widespread with yield losses of 12-35% in corn and 13-38% in soybeans
- Group 2 and Group 5 resistance reported
- Photo courtesy of weedinfo.ca
Related products: BlackHawk, Fierce, TriActor, Trophy, Estaprop XT and Koril
Perennial sow thistle
- Perennial broadleaf
- Often confused with several other weed species, including annual sow thistle and dandelion
- Photo courtesy of weedinfo.ca
Related product: BlackHawk
Redroot pigweed
- Annual broadleaf
- Can result in yield losses of 11-34% in corn and 12-36% in soybeans
- Photo courtesy of weedinfo.ca
Related products: BlackHawk, Fierce, TriActor, Enforcer M,Estaprop XT, Boost M and Trophy
Tufted vetch
- Perennial broadleaf
- Reproduces by seed and underground rootstocks
- Found throughout Ontario
- Photo courtesy of weedinfo.ca
Related product: Trophy
Yellow foxtail
- Annual grass
- Same distribution as green foxtail but less abundant
- Reported resistance to Group 5
- Photo courtesy of weedinfo.ca
Related products: TriActor, Step-Up
