Another common query about watering lawn is regarding the amount of water required by the grass. In this case too, there are various factors like the type of soil, climatic condition and the type of lawn grass. In general, it is said that lawn grass require around one inch of water in a week. While the common practice is to water the lawn daily with lesser amounts of water. Most people think that providing small amounts of water every day is better than watering deeply occasionally. But, the latter method is beneficial for lawn grass, that has to be soaked well once a week, with at least one inch of water. However during rainy seasons, you can reduce the frequency of watering. But, in case of young plants, daily watering will be beneficial, for at least two months.
If you are planning to mow the grass, then, water the lawn thoroughly, the day before mowing. Frequent watering may be required for a short period, after using dry fertilizers. You may also dilute the nutrients in the water meant for lawns. You may also get confused about how long to water lawn, so that the grass gets one inch of water. In such case, keep some empty cans within the range of the sprinkler and check the time the sprinkler takes to collect one inch water in these cans. This will be the time needed for the sprinkler to provide one inch water for the lawn.
In short, the best time to water lawn is early morning. For established grass, watering once a week will be sufficient and young plants require frequent watering. In general, the frequency of watering grass can be increased in case of extreme heat, sunlight, drought and high winds. Likewise, reduce the frequency during cold conditions, low winds, humidity and rainy season. Lawn aeration will be beneficial, if the soil is too dry to absorb water. You may gain more knowledge about this subject from the local nursery authorities, who will be in a better position to advice you, as they know more about the climatic conditions and soil and grass type.