Behind the South End's rowhouses are narrow backyards that people have made into something: a terrace, a patch of lawn, a place to sit out in the evening. K&Z Landscaping & Patio LLC looks after ground like that through the year, mowing, trimming and running cleanups while things grow, then plowing and salting once the drives and alleys go white. Tight spaces ask for care, since there is no room to be careless with a blade or a plow. The payoff is a small yard that stays usable and a driveway that stays open. Albany's year swings hard, and both ends are covered.