At the flat end of the village, where Kisco Avenue runs straight and the light arrives early over the low roofs, the mowing starts before the day gets its heat. ALDO'S LANDSCAPING SERVICES CORP keeps lawns in Mount Kisco cut, edged and tidied — mowing, trimming, mulching beds and the cleanups that bracket the growing months. There is a particular satisfaction in a strip of turf ending in a clean line against the sidewalk, the clippings swept, nothing left behind but the smell of it. Northern Westchester grass runs fast in a wet June and turns stubborn by a dry August, and each asks for a different hand on the machine. The route carries out across the village and the roads that leave it, and by evening the yards look like someone paid attention.