The present invention is directed to a rigid, blade-shaped landscaping tool for defining and maintaining a well-defined boundary between a garden or soil bed and an adjacent natural or man-made ground surface. The tool generally comprising a vertical cutter, a horizontal cultivator, a grader flange and a handle mount disposed on the top edge of the blade. In particular, the landscaping function of the tool can be accomplished by physically drawing the tool along the adjacent natural or man-made ground surface whereby the vertical cutter and an associated horizontal cultivator sever plant growth and/or dislodge soil which are then physically graded away from the plane of the vertical cutter and away from the adjacent ground surface toward the soil bed to create the desired, well-defined edge and/or boundary between the soil bed and the adjacent ground surface.