Mills Park in May is one long green rectangle with Pleasant Home sitting at the head of it like a held breath — and every Oak Park yard is a smaller version of the same idea. Kelty Lawn Care tends those smaller rectangles: mowing on a rhythm, trimming what the mower can't reach, edging until the grass stops exactly where it ought to. May in this village moves fast, and the lawn can gain on a person inside of a week. Staying out in front of it is the craft, and the payoff is a yard that looks composed rather than merely cut. From the sidewalk, that reads as calm.