The first warm Saturday in Old Town, the brick storefronts along Hamilton Street throw long shadows and every yard behind them wakes up at once. Leach Lawn Care starts the season there and works outward, mowing, trimming and edging city lots that have been waiting all winter to hear an engine. The reward is the moment a shaggy Saginaw yard turns back into a lawn — stripes laid straight, the edge along the walk cut clean enough to read. Grass grows fast on this river-plain soil, so the route runs steady from thaw to frost. It is a plain kind of pride: leave a place looking cared for, then go do it again.