October lets go of the oaks all at once. Between the side streets and the pines out toward Heckscher State Park, whole yards go ankle-deep in a weekend, and the wind coming off the bay only rearranges the pile. Tri Care Lawn Services, Corp. takes on that end of the calendar — leaf removal, the last mows of the season, beds cut back and mulched before the cold sets in. The warm months bring the steadier work: cutting, edging, hedges kept in line, feeding the turf so it comes back thick. What the crew is after is the sight at dusk, when the lawn is raked down to bare green, the piles are gone, and nothing is left drifting at the fence line.