Saturday morning at the ballfields off Winslow Street and the smell of cut grass is already everywhere in Marshfield — somebody was up early. Johns Lawns keeps residential yards to that same standard: mowed on time, edged along the drive, trimmed around the posts and the mailbox and the maple. The spring cleanup gets winter out of the beds, and the fall pass takes the leaves before they mat. A lawn tended weekly never looks like it needed rescuing, which is rather the point. The compliment worth having is a neighbor who cannot say what changed, only that the yard looks good.