Shawsheen Village was drawn all at once — brick rows, straight sidewalks, a whole plan laid over the riverbank — and the lawns in front of those blocks have been answering that geometry ever since. Andover Landscape Design and Construction mows, edges and trims through those streets and out along the newer roads toward Argilla and Lowell Junction. A stripe pulled true against a brick walk, a bed line cut sharp into turf: small things, and the difference between a yard and a picture. Come November they take the leaves off before the first freeze locks them into the grass, and in April they open everything back up again. It is steady, unhurried work in a town that notices detail.