Water more or less often depending on the weather, turfgrass species, soil type, season, shade, fertilization practices, mowing height, and slope. Weather changes by season and varies considerably from year to year. Adjust watering frequency to the weather and not the calendar.
Use the soak and wait method. Soak soil to the depth of the root zone, and wait as long as possible before watering again. Watch for signs that the turf needs water such as a darker bluish-green color or footprints remaining in the turf. Do not wait until turf is severely wilted. Sandy soils have to be watered more often than loam or clay soils.
Watering too frequently and lightly is a common mistake. Frequent, shallow watering produces a shallow root system and reduces resistance to heat, cold, drought, and wear. Water as infrequently as possible without stressing the turf. Lawns differ in soil characteristics and species, so there is no simple formula. The following guidelines should be adjusted for the site.
Factors that affect lawn watering include:
• Grass type — warm- or cool-season
• Weather — temperature, humidity, sun, rain, wind
• Soil type — sand, clay, loam, or compacted soil
• Sunny or shady location
• Seasons — shorter days and cooler temperatures during the spring and fall vs. longer days and hotter temperatures during the summer
• Amount of fertilizer applied
• Mowing height
• Slope of the yard
Follow these practices to conserve water.
• Water only when lawn shows signs of needing water.
• Water in the morning.
• Water slowly so all water is absorbed, no runoff.
• Direct the water only onto the turf.
• Use sprinklers that produce drops of water.
• Soak soil to a depth of 6 to 8 inches.
• Stop watering at least 30 minutes before sundown.
• Start water-conservation practices at the beginning
of the season.
• Water as infrequently as possible without stressing grass.
• Avoid shallow, frequent watering and watering paved walks, drives, and streets.
• Do not water with a fine mist spray or in high winds.
• Do not mow grass short or fertilize excessively.
