Eliot Street in September runs under big oaks that have been throwing shade on the same lawns for a very long time, and grass grown in that shade asks for a lighter, more careful hand. Towne Tree & Landscaping mows it that way — a higher cut where the canopy is thick, close trimming around trunks and stone borders, edges drawn clean along walks and drives. Autumn here means clearing leaf after leaf off turf that only gets a few good hours of sun a day. The reward is a lawn that stays even and unblemished right up to the frost.