The Eastern River comes up twice a day into the Dresden marshes, and on an early summer morning the grass on both banks carries the same silver dew. Great Works Landscape keeps lawns in that country — mowing, trimming, edging and clearing up in spring and fall — where a yard can run from a farmhouse right down to tidewater. Cutting near a river means paying attention: the soft ground, the low spots, the line where lawn gives way to marsh grass and ought to look deliberate. Done right, the whole yard reads as one continuous green thing, tidy at the house and easy at the water. That makes for a satisfying walk at the end of a mowing day.