Leave grass clippings on the lawn. They return nutrients to your lawn and reduce the need for additional fertilizer. Keep mower blades sharp. Watering In dry spells, allow an established lawn to go dormant, but water every 4-6 weeks. If you want a nondormant lawn, then water when grass looks blue-gray and you leave footprints on it.
Early morning is the best time to water to discourage disease and increase watering efficiency.
Avoid water runoff from the lawn. Avoid light, frequent watering. Water that moves into storm drains dumps directly into streams. If fertilizer lands on hard surfaces, be sure to blow or sweep it up immediately. Fill or empty spreaders on your grass, garden, or natural areas.