Herbicidal compositions and methods of controlling undesirable vegetation using a combination of (a) a compound of formula (I) or an agriculturally acceptable salt or ester thereof and (b) propyzamide, wherein the composition or method exhibits synergism, are provided. The compositions provide control of undesirable vegetation in e.g. winter/spring oilseed rape, winter/spring canola, vegetables, Brassica spp, ornamentals, rice, wheat, triticale, barley, oats, rye, sorghum, corn/maize, sunflower, row crops, pastures, grasslands, rangelands, fallowland, sugarcane, turf, tree and vine orchards, and industrial vegetation management and rights-of-way.
