Herbicidal compositions and methods using a combination of (a) a compound of formula (I): (structurally represented) or an agriculturally acceptable salt or ester thereof and (b) picloram or an agriculturally acceptable salt or ester thereof provide control of undesirable vegetation in, e.g., rice, wheat, barley, triticale, oats, rye, sorghum, com or maize, oilseed rape, vegetables, pastures, grasslands, rangelands, fallowland, turf, tree and vine orchards, aquatics, industrial vegetation management or rights-of-way.