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How to Manage Pests

The UC Guide to Healthy Lawns

Zone 8 - Cool-season grasses - 2 inches sprinkler output

Irrigation recommendations
Month
Amount of time to irrigate
(minutes / week)
January*
13
February*
17
March
21
April
29
May
34
June
38
July
32
August
38
September
32
October
23
November
17
December*
13

*Irrigation is not usually required in winter months because rainfall provides sufficient water.

  • Divide the recommended number by the number of times a week you are watering.
  • Cool season grasses require more frequent watering than warm season grasses because their root systems are not as extensive. Divide the required weekly minutes into about 3 equal irrigations, evenly spaced throughout the week. Fewer applications may be sufficient during cooler months. Desert areas, slopes or areas with shallow soils also need shorter, more frequent irrigations than warm season grasses.
  • Be sure to monitor your sprinkler system to make sure you are getting uniform coverage. Repair and replace broken sprinklers as necessary.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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