The present invention relates to herbicidally active compositions, which comprise 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole [common name pyroxasulfone] and at least one herbicide B and at least one herbicide compound B which is an selected from inhibitors of the very long chain fatty acids (VLCFA) synthesis. The invention furthermore relates to the use of a composition as defined herein for controlling undesirable vegetation, in particular in crops. When using the compositions of the invention for this purpose the herbicide A and the at least one herbicide B can be applied simultaneously or in succession, where undesirable vegetation may occur.
