Usually check to see if the roots require watering and not the soil on leading that is dry. A soil moisture meter tester can be a handy tool to have about if you're not certain if you're below- or more than-watering your plants. The purpose of watering the backyard is to make certain the earth is moist. These are the fundamentals for planting and sustaining a nice lush lawn. As the disease progresses it turns brown, then black.