Watering grass is simple right?
Grass + Sunshine + Water = Healthy Grass
Basically, this is right, yet there are a few tweaks needed to have healthy green grass. Here is answers to the grass watering questions when, how often, and how long.
When to Water Your Lawn
How Often to Water your Yard
In a drought, water your lawn twice a week with about three to four days between each watering. If there has been a lot of rain, do not start watering your yard until is dry and just begins to look a little stressed. If you have an automatic irrigation system installed with a rain sensor, your rain delay should be at least three days, preferably four.
Watering your lawn infrequently allows for deeper root development which makes for healthier grass. This means your grass will look good and survive even when everyone else's lawns are struggling. So fight the temptation to water every other day.
How Long to Water Your Lawn
Start by watering your lawn for 15 minutes per area. If you have an underground irrigation system, this will be easy since you can adjust your controller. For everyone else, you can just set a timer to remind you to move the sprinkler every 15 minutes.
Test an area 24 hours later by digging a small 9" deep hole. If the soil is moist 8 inches deep, you are watering the correct amount of time. If the moisture is only reaching three to five inches, you will want to change your watering routine. This time water 15 minutes, wait 15 minutes and then irrigate the same area for 15 more minutes.