A wing extension for a plow blade is disclosed which comprises an extension plow blade having a plow surface for plowing a desired material; and mounting means for pivotally mounting the extension plow blade to an existing plow blade. The extension plow blade is pivotable from a first use position in alignment with the existing plow blade to a second rearwardly deflected position on contact with an immovable object. A biasing member, such as a torsion spring, is provided for biasing the extension plow blade in the first use position.
