Willow Brook Park fills up on summer evenings in New Britain, and the whole city seems to be outdoors at once — which is exactly when a well-kept front lawn does its quiet part for a street. Ernie's Lawn Services LLC is a lawn care outfit working that ordinary, essential rhythm through the growing months. The soil in this corner of central Connecticut runs heavy, August tends to turn dry, and grass here rewards attention more than luck. Mowing, trimming and yard cleanups bracket the season on either end. It is straightforward work on a familiar map, close to home.