Herbicidally active compositions, which comprise 4-amino-3,6-dichloropyridine-2-carboxylic acid (common name: aminopyralid), 2-[( RS )-4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl]-5-methoxymethylnicotinic acid (common name: imazamox) and at least one herbicide B which is a chloroacetanilide selected from dimethenamid, dimethenamid-P, S-dimethenamid, acetochlor, alachlor, butachlor, butenachlor, diethatyl-ethyl, dimethachlor, metolachlor, S-metolachlor, pretilachlor, propachlor, prynachlor, terbuchlor, thenylchlor and xylachlor, a method for controlling undesirable vegetation, their use for controlling undesirable vegetation, and formulations comprising such compositions.