Abstract: A grass cutter carriage is set forth wherein a conventional lawn mower is securable within an adjustable rectangular framework. A pair of laterally positioned wheels to said framework are pivotally mounted wherein the noted wheel height locations can be readily changed through the use of a unique hinged support. The intent of this improved design carriage is to extend the use of existing commercially available rotary grass mowers to enable their use to cut tall grass, weeds and other vegetation in open rock strewn field with terrain not compatible to existing rotary grass lawn mowers.In addition, the carriage is configured to accommodate a wide range of mower and mower wheel sizes without demanding modification of the existing mowers.