By ten on a July Saturday the sycamore shade has slid off the sidewalks in Roselle and the heat sits flat on the blocks running down toward Linden. Don Luis Landscaping LLC works straight through it — mowing, trimming around fence lines and posts, edging the walks, hauling the summer's growth away. Small lots ask for a careful hand; there is no room for a sloppy turn between a driveway and a rose bed. The payoff is the look of a yard at five o'clock, mowed and swept, with the smell of cut grass holding under the porch. Fall brings the leaf work, and then the cycle starts over in a borough where every street is somebody's front view.