September on the Windham Center green is all slant light and the smell of the Natchaug running low over its stones, and it is a fine season to be out mowing. B&L Landscaping LLC keeps lawns across Windham on a weekly cut, with trimming worked in close to fence lines, posts and foundations and the walks blown clear before anyone comes home. Beds are mulched and edged in the spring; the leaf stretch carries the work deep into November. From the village greens down to the streets that drop toward Willimantic, the job stays the same while the ground under it never does. A cut lawn with a clean edge reads as tended from fifty feet away.