ROCHESTER, Minn. — The Rochester City Council relaxed its limits on weeds to allow property owners to abandon lawns and go with natural landscaping. The ordinance change, however, isn’t a free-for-all for weeds. Boulevards will still need to be turf and manicured. Also: Noxious weeds that threaten human or animal well-being are banned. The change moves Rochester into compliance with a state law that allows natural landscapes so long as they are planned, intentional and maintained. There also is a 12-inch maximum for most grasses.