By the second week of November the light over Ansonia turns thin and silver, the Naugatuck runs loud with cold rain, and the ridge behind the Nature Center gives up the last of its color all in a few days. Tree Care of Connecticut spends that stretch putting properties to bed — clearing leaves out of beds and fence corners, giving the lawn a final low cut so it goes into winter clean, hauling away what the wind piled against the garage. The rest of the year runs the other direction: mowing on a steady rhythm through the valley humidity, trimming tight around foundations and posts, laying mulch that darkens the beds after a spring rain. Ansonia yards sit close together, so the details carry — a straight edge, a swept walk, nothing left in the street. Come the first real freeze, the ground is tidy and the place looks like somebody was paying attention.