The present invention is directed to new uses of the herbicidal active compound 2 (2 4 dichlorophenyl)methyl 4 4 dimethyl 3 isoxazolidone (compound I) as foliar herbicide. Furthermore the present invention is directed to combinations comprising active compound 2 (2 4 dichlorophenyl)methyl 4 4 dimethyl 3 isoxazolidone (compound I) and to a method for controlling undesired weeds by applying the herbicidal active compound 2 (2 4 dichlorophenyl)methyl 4 4 dimethyl 3 isoxazolidone (compound I) or combinations comprising compound I to weeds or to the area in which the weeds grow after emergence of the crop.