The North Tonawanda year comes in two halves, and Beaver Lawn Care, Inc. works both of them. From the first green flush along Oliver Street to the last cut before Halloween, it's mowing, trimming, edging and cleanups — the steady attention that keeps a whole block looking square. Then the calendar turns, the wind swings around off the water, and the same trucks come back with blades on the front to open driveways and walkways. The satisfaction just changes shape with the weather: a lawn striped straight to the curb in July, a drive scraped down to pavement while the streetlights are still burning. One outfit, both seasons, working North Tonawanda, Tonawanda, Wheatfield and Pendleton.