Eastchester grew up along the Hutchinson River, and the old trees followed the water — sycamores with their mottled bark, oaks shading the stone of St. Paul's. Greenkeepers Tree Care Inc keeps that inherited canopy in working order on lots where a house, a driveway and a neighbor's fence all sit within reach of a single limb. Precision is the whole job: trimming that takes weight off a leader without opening a wound, pruning that leaves a shape nobody would guess was shaped. Removals go out in pieces, rigged down over a rooftop rather than dropped. When a summer storm rolls up the Sound and darkens a curved street, storm damage cleanup clears the way well before the morning trains.