On a June evening the fields along Route 202 hold the light a long time, and the mown ground out by Polo Grounds Park smells like the whole month at once. JM Services keeps Bernardsville lawns in that condition all season — cut on schedule, trimmed around posts and plantings, tidied at the curb before the truck pulls away. Grass in this valley jumps after a thunderstorm rolls off the hills, and the answer is simply to be back on time. The year opens with a cleanup and closes with the leaves cleared away. In between, the mower does the talking.