In July the Merrimack bends past Moseley Woods, and the shade under those old trees stays cool while the open lawns above go bright and thick. Sea of Green Lawn Care, LLC keeps Newburyport grass in that condition — mowed on schedule at the right height, trimmed around beds and posts, edged where lawn meets drive. Cleanups open things up once the snow lets go in spring, then pull the leaves off in fall before they smother the turf. The city's yards run small and shaded near the water and wider and sunnier as you head inland, and the mowing changes to match. Come around at dusk and the fresh-cut smell is still hanging over the whole street.