Out toward Shaker Pines the lanes run past still water and long stone walls, and the seasons announce themselves plainly here. Costa & Son's Property Maintenance LLC reads them the same way — mower decks in May, plow blade in December, and the attention that keeps either one from becoming somebody else's chore. A lawn cut on schedule holds its color; a drive cleared at dawn means a car leaves on time. They take the mowing, trimming and cleanups while the ground is soft, and the plowing and salting once it is not. It is plain work done on schedule, in a corner of Enfield that has always rewarded that.