The present invention relates to a synergistic herbicidal composition comprising； (A) mesotrione, and: (B) a second herbicide selected form； (B1) triazines (B2) triazolinones (B3) triazinones (B4) imidazolinones (B5) dicamba (B6) flumetsulam (B7) trifloxysulfuron (B8) tritosulfuron (B9) triasulfuron (B10) pyriftalid (B11) prosulfocarb (B12) pretilachlor (B13) cinosulfuron, or their herbicidally effective salts. A method of controlling th growth of undesirable vegetation, particularly in crops, using this synergistic composition is also disclosed.
