The long green Plaisance runs a mile between two parks on the South Side, a strip of open lawn the neighborhood has been crossing on foot for generations. Chicago Premier Landscaping & Lawn Care carries some of that ambition into ordinary yards nearby — mowing, edging, hedge trimming, bed work and mulch, cleanups as the season closes out. September there is the city at its most generous: warm days, cool nights, turf thickening back up after the strain of August. It's the right month for cutting an honest line between lawn and walk and letting it stand. Landscaping is mostly deciding where things end, and then meaning it.