Derby is the smallest city in Connecticut and it sits at a confluence — the Naugatuck coming down to meet the Housatonic, two rivers folding into one below the old brick. Greenleaves Interior Landscaping works with growing things in that valley, tending lawns and plantings for households in Derby and on the streets that climb away from the water. Morning arrives late here; the hills hold the sun back until it clears them, and then the whole floodplain lights at once. There is a real satisfaction in a lawn that reads well from the sidewalk — even color, tidy edges, nothing straggling. Green is the whole name and the whole point.