On a June evening at Atkinson Common the light goes long and gold across the grass, and every lawn in the neighborhood is quietly showing how it has been treated. Newburyport Services makes that showing a good one — cutting kept on schedule so the color stays even, trimmer work into the corners a mower cannot reach, borders drawn clean where turf meets walk. Early-season cleanups clear the winter's litter of twigs and road sand; autumn cleanups take the leaves down before they mat over the grass. Sea air keeps the season generous here, green later into fall than it has any right to be, which means the mower keeps running. A cut lawn on a summer evening is a small thing, and it changes the whole front of a house.