The Souhegan gets its start in the New Ipswich hills, running small and cold past stone walls that mark out fields nobody plows anymore. ES Landscaping works the lawns that grew up inside those walls — mowing, trimming, edging, and the landscape upkeep that keeps a yard from sliding back into the woods. Out here a mown line against the tree edge is the whole difference between a property and a clearing. Spring cleanup pulls the winter down out of the grass; fall cleanup takes the hardwood leaves before they mat. Steady, unhurried outdoor work, in a town where the hills do most of the talking.