Spring arrives at Center Groton with the smell of cut grass drifting off the ball fields at Copp Family Park, and the season begins again on every lawn in town. Cardinal Property Services keeps Groton lawns mowed and maintained through it — the steady week-to-week work of grass taken down to height and edges run clean, a yard that looks tended rather than merely shortened. It is unhurried work, measured in stripes across a side yard and the warm smell coming off a mower deck. Groton summers run long and salt-damp and the grass never really stops asking, which is rather the point of hiring somebody to answer. The result is simple and worth having: a lawn that reads cared for from the road.