NORMAN — This time of year, there seems to be some confusion on the frequency and amount of water we should apply to our lawns. With water shortage concerns on the rise, water use and consumption is a lively issue in many communities.
I always get questions on how to appropriately water in the landscape. This is no surprise, as lawns are the most chronically over-watered plant in the landscape. So, how should you water the lawn?
First and foremost, if you live in an area that will allow warm-season lawns like Bermudagrass to go dormant, that is ideal. It will be just fine and regreen when normal rainfall occurs.
However, some homeowners and homeowners associations won’t tolerate brown grass in the summer.
The best, most efficient time to water grass is early morning, say between 3 and 8 a.m. During this time, there is more available water pressure and typically less wind to interfere with the direction of the water.
Early morning is better than late evening, as the leaves have time to dry out. This can decrease the chance of fungus and disease occurring. The longer that the plant stays wet, the more likely a disease problem will arise.
How much should you water? Only one inch of water per week, applied all at once. Watering more than this is a waste, as one inch is all that is needed to wet six to eight inches of soil — where the grass roots are located. If runoff occurs into the street or other paved areas, reduce the amount of water applied or create a short break time between watering times.
If you have a sprinkler system, it is easy to measure one inch by using a tuna can and timing how long it takes to fill up. Watering deeply, yet infrequently, like described above, will lead to a more drought tolerant and resilient lawn.