The fieldstone walls of Bedford were laid by people who never saw the woods close back over them, and today half the lawns in town end at one. Bedford Landscapers and Tree Care mows and edges up to that stone through the thick of July, when grass climbs fast and the shade crosses a yard slower than the afternoon does. Hedges get shaped, borders get held to a line visible from the driveway, mulch goes down dark against the green. When the trucks pull out, the clippings are gone and the pavement is blown clean, which is the part most people notice without knowing why. Long Guard Hill light at six o'clock does the rest of the work for free.