Rollinsford is a mill village and a river bend, the Salmon Falls running dark past brick that has stood there longer than anyone living beside it. By mid-May the grass along those streets and out on the farm roads toward Dover comes in thick and fast. Janetos Landscaping LLC mows it, trims it, edges it, and carries off whatever the spring cleanup turns up in the melted-out corners of a yard. Autumn is the second push, when leaves from the river maples cover everything in about four days. It is a small town to work in, which means every lawn gets seen by somebody who knows it — good reason to keep the lines straight.