The streets climbing west out of Haverstraw village gain height fast, and the hill loses the sun a good while before the river gives it up. Greenworld Irrigation & Lighting keeps the lawns on that grade tended all season — mowing, edging, trimming and the cleanups that bracket spring and fall. Grass on a slope dries at the crown and stays heavy at the foot, so the work is a conversation with the ground rather than one flat pass. By the time porch lights come on along the hillside, the mower lines run true from driveway to hedge and every clipping is gone. It is a small, unshowy kind of beauty, and it holds all week.