Walk the trails of the Cathance River Nature Preserve and you learn quickly what Topsham is built on: granite ledge shouldering up through the duff, pine roots crossing the path, moss holding every patch of shade it can find. Mossy Rock Landscaping tends lawns on exactly that kind of ground, where a yard has to make peace with stone and spruce shadow. Mowing, trimming and cleanups here are a matter of reading the property first — where the sun lands, where the damp lingers, where the blade should lift. Done right, the grass runs clean to the ledge and the ledge looks like it was always meant to be there. Lawn care for Topsham homes.