Distribution of glyphosate and cloransulam-methyl resistant Canada fleabane (Conyza Canadensis L. Cronq.) in Ontario

From 2013 to 2015, a survey was conducted to document the distribution of glyphosate-resistant (GR) and multiple-resistant Canada fleabane with resistance to glyphosate and cloransulam-methyl across Ontario. This survey shows that GR Canada fleabane is present throughout southern Ontario, from Essex county in the southwest to Glengarry county adjacent to the Quebec border.