An apparatus that removes matted clumps of wet grass from a lawnmower discharge port includes a hinge having a first flap secured to a trailing edge of the discharge port. A second flap is secured to a rigid flat plate about mid-length of the plate. The plate has a position of repose normal to a longitudinal axis of symmetry of the lawnmower and a pivoted position parallel to the longitudinal axis. The position of repose allows grass clippings propelled by a rotating blade to travel without obstruction toward the discharge port. A cord is secured to the plate so that a lawnmower operator can cause the plate to pivot from its position of repose to drive matted clippings through the discharge port. A torsion spring resists the pivoting of the plate and returns the plate to its position of repose when the cord is released by the operator.
