The Merrimack does its slow work under the Bates Bridge every morning, and Groveland wakes up on the bank above it with the river fog still lifting off the water. Casey & Sons Landscaping starts the day in that hour — trailer down, first lawn of the route getting its stripes before the heat arrives. Mowing, edging, trimming, mulching and the heavy clearing work of April and November keep properties looking cared for from the street to the back fence. Nothing beats standing at the curb afterward and seeing every pass line up the way it should. Groveland and the nearby Merrimack Valley towns.