There are many factors that influence the water requirements for lawns in the Grand Valley. Since no two lawns are exactly alike, a “one-size fits all” approach doesn’t work. Factors such as soil condition, the gradient/slope of the lawn, specific grass species planted and even weather conditions will all play a part in determining the proper water requirements for your lawn. For example, a healthy, high-quality bluegrass or ryegrass lawn may need up to 2.5 inches of water per week under hot, dry, windy summer conditions. Conversely, when the weather is cool or cloudy, this same lawn will require much less water.
If turf-type tall fescue can grow a deep root system, it may perform well with less water than a bluegrass lawn. However, in many cases, tall fescue requires as much water as bluegrass to look good.
Shady lawns and areas protected from the wind will require less water over the growing season than lawns with turf exposed to more sun and windy conditions. Lawns planted on a slope or steep gradient may require shorter and more frequent watering times than a lawn that is level.