Cheshire mornings start with mist lying flat on the reservoir and the rail trail running out of it into the trees. Laurin Lawn & Garden works the valley floor along the Hoosic, where the soil is generous and the grass grows hard from May to September — mowing, string trimming, edging, mulching beds, seeding and feeding, and clearing each yard down to clean ground in spring and again in fall. Berkshire lawns run right up to stone walls and old maples, so nothing here stays a straight line for long. What lasts is the finish: an even cut following the curve of the land, borders defined, leaves gone. By the time hard frost sets in, the yards are put away right.