In early spring the willows at Cooper's Pond turn yellow-green before anything else in Bergenfield does, and that is the town's signal to begin. Birch Grove Landscaping Inc takes it — a cleanup first, the winter's grit and snapped twigs cleared off, then a first cut set high enough to let the grass find its feet. After that comes a steady turn of mowing, edging, trimming and mulching, right through the long green middle of the year. Hedges get shaped, beds get their dark border, and the leaves come off in fall before frost seals them down. Between that pond and the streets that run out from it there are a few thousand small lawns, and every one of them is somebody's entire view.