Follow the Nissequogue north from Smithtown and it widens into tidal marsh, the water brackish, the grass a different green than anything on a front lawn. CM Landscape & Lawn Maintenance Inc works the dry side of that landscape in June, when everything grows faster than the calendar allows and a week between cuts feels like two. Mowing, trimming and edging come around on a fixed rotation so no lawn ever gets away from itself. Cleanups in spring clear the winter litter; cleanups in fall take down the leaves before they mat the turf. The measure of a good day is simple here: a clean cut, a crisp border, and a driveway swept bare.