A lawn bag apparatus to stabilize an opening of a lawn bag is disclosed, comprising a frame comprising a plurality of sidewalls arranged to approximate the opening, each sidewall comprising a midwall portion extending approximately vertically, an upper wall portion extending upwardly and outwardly from the midwall portion, and a lower wall portion extending downwardly and inwardly from the midwall portion, a first clamp positioned along one of the sidewalls, and a second clamp positioned along a sidewall opposite the first clamp, the first and second clamps being movable between an open, disengaged position and a closed, engaged position for detachably securing the frame to the lawn bag.