A synergistic herbicidal mixture comprising A) picolinafen； or one of its environmentally compatible salts； and B) a synergistically effective amount of at least a sulfonylurea of formula II wherein the variables A, B, X and R 1 to R 3 have the meanings given in the specification； and, if desired, C) at least a safener. Compositions comprising these mixtures, processes for the preparation of these compositions and their use for controlling undesired plants.
