Watering grass daily isn’t always the best idea. Some soils retain water for longer than others, and some areas are hotter and drier than others, meaning the amount of watering required may vary from one area to another.
The key is to get a sense of your own soil’s needs by considering factors such as air temperature and humidity levels. Monitor the soil moisture level with your finger, a garden trowel, or a moisture meter, so you aren’t over or under-watering it.
Grass should be watered when it shows signs of distress like wilting or discoloration, which are due to lack of water in the root system. Ideally, look for grass blades that curl up ⅓ of the way and then remove them while they’re still moist. Don’t allow them to dry—this equates to killing them off because any chance of recovery has been lost at this stage.
For some lawns, an inch or two per week should suffice but remember, too much will saturate the soil resulting in disease-prone shallow root development due to lack of oxygen in wet soil environment. A light weekly sprinkling will encourage deeper root growth, making the lawn more tolerant and resilient against drought conditions as well as weediness due to low competition from weak roots.
On hot days during summer, check for signs of wilt, and if present, water lightly gives time for absorption immediately after splashing on water rather than leaving it dry on the grass surface for a long duration before absorption happens. The last variable is a season – summer demands more water than spring/autumn/winter periods when rainfall can provide adequate irrigation if supplemented occasionally with extra sprinkles when necessary.