Abstract: A shading apparatus (10) for use with a riding lawnmower mounts to the seat or other suitably stable part. A shader (12) is of sufficient diameter to shade the rider of a riding lawnmower under most conditions. The shader (12), typically an umbrella is supported by a single shaft (14). Shaft (14) is next inserted into umbrella support bracket (36), a cylindrical receptacle dimensioned to provide a snug fit. The umbrella support bracket (36) can be pivotally connected to a support flange (34) by connection means. The connection means can be a wing nut (26) penetrating both the bracket (36) and the flange (42). Support flange (34), in turn is connected to the riding lawnmower by a plurality of screws (32). Radial ridges on complementary surfaces (40a, 42) hold the umbrella (12) in position under normal conditions.