Method 2. Watering by Resetting Your Sprinkler’s Timer Every Month

This is a good, scientific way to irrigate your bluegrass. This method is best for homeowners who don’t have time to look up the Lawn Watering Guidelines every few days, but do have time to look up and vary their lawn watering schedules once a month.

1. Determine your sprinkler’s output rate in inches per hour using the Sprinkler Output WorksheetfromMethod 1, above.

2. At the beginning of each month, find out how much water your bluegrass needs each week from the Monthly Water Needs chart at the beginning of this article.

3. Divide the amount of weekly water your bluegrass needs (step 2) by the number of times you want to water your lawn each week.  (Watering two or three times a week is sufficient.)

4. Use the Sprinkler Runtime Table from  Method 1 above to find out how long to run your sprinklers.

5. Run your sprinklers for the number of minutes indicated in step 4.

 

Method 3. Watering by the Footprint Test

This is a good way to irrigate your bluegrass. This method is best for experienced gardeners who have time to check the condition of their bluegrass daily, and can water when needed.

 

1. When your bluegrass holds footprints for more than an hour, it needs to be watered.

2. Determine your sprinkler’s output rate in inches per hour using the Sprinkler Output Worksheet.

3. Use the Sprinkler Runtime Table from method 1 above to determine how long to run your sprinkler.

4. Run your sprinklers for the number of minutes indicated in step 3.

 

Please note:  These methods are applicable only to established bluegrass lawns.  They are not suitable for newly sodded or seeded bluegrass lawns.  Also, if your lawn is on clay soil, you may find that water is running off when you irrigate as directed.  In that case, you may want to apply half the amount of water needed in one cycle, and apply the other half 30-60 minutes later, after the first half has had a chance to soak in.  If your lawn is on extremely sandy soil and browns when irrigated as directed, the water is draining away too rapidly, and you may want to water more often.