The Aroostook River rolls through Caribou over cobble and gravel, and by July the banks are all green shoulder and washed stone. North End Landscaping & Stone Supply, Inc. works in that register — mowing and trimming lawns, edging beds and walkways, clearing spring and autumn debris so a yard reads sharp against the stonework. When the season flips, the trucks go to plowing, shoveling and sanding across town. A crisp mowing line beside a stone border is a small thing that changes how an entire property looks. That is the result the work aims at, in every month of a northern year.