A blade sharpening system is provided that includes a sharpening assembly including a sharpener configured to engage a generally circular agricultural implement blade while mounted on the agricultural implement. The blade sharpening system also includes a rail configured to support the sharpening assembly and to facilitate movement of the sharpening assembly along the rail. The blade sharpening system further includes a mounting feature coupled to the rail and configured to engage a structural member of the agricultural implement to support the rail and sharpening assembly.