By nine on a Saturday the grid of streets off Stuyvesant Avenue is humming with small engines, and every front lawn sits framed in belgian block like something set in a case. GreenStripe Lawn Care mows those front squares and the longer back yards behind them, laying the pass lines straight enough to read the direction of travel from the sidewalk. Trimming, edging and a full blow-down of the walk come with the cut, so the only evidence left behind is the color. Feeding and overseeding through the year keep the turf thick enough to hold a stripe at all. Lawn care around Union Center and the blocks that fan out from it.