Abstract: An attachment for a shoe of a reciprocating type mower. The attachment includes a generally planar upright shield mounted in substantially perpendicular relation to a generally planar rectangular blade terminating adjacent the outermost sickle knife in a terminal edge having serrations. The attachment blade coacts with the sickle blade to cut grass, hay and the like in the region adjacent to the shoe. The shield provides coverage of the slot in the shoe through which the outermost end of the sickle blade passes in its reciprocatory movement. The attachment minimizes accumulation of cuttings which reduce mower efficiency.