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Plants and Garden

Watering Schedules

Irrigation is an artificial application of water to soil to enable satisfactory plant growth. It’s essential for successful gardening in the desert. The purpose of irrigating is to maintain soil moisture in such a manner that normal root development and their vital functions is facilitated and water is efficiently and conservatively utilized.
Irrigate the entire rooting zone. to maintain good growth, plants must root at least as extensively as they foliate. And feeder roots are generally most prolific under the outer 2/3 of their branch spread. Consequently, water should be applied under the entire foliar spread of trees, shrubs, etc.
Irrigate at the rate the soil will absorb it. Wasteful run-off can result if the water is applied to fast, and insufficient infiltration through root zones may occur if it’s applied too slow. Level ground and mulched surfaces facilitate water infiltration and retention.

WATERING SCHEDULES FOR SOUTHERN ARIZONA LANDSCAPE PLANTS

ESTABLISHED PLANTS SEASON FREQUENCY DURATION AND
PENETRATION
SUMMER LAWNS Summer 3 to 5 days 1/2 to 1 hr.
. Spring    & Fall 7 to 10 days 12" deep
. Winter 20 to 30 days .
WINTER LAWNS Spring & Fall 3 to 5 days 1/4 to 3/4 hr.
. Winter 5 to 10 days 8 to 10" deep
TREES . IN GRASS LAWNS IN DESERT
LAWNS		 .
. Summer 14 to 21 days 10 to 14 days 4 to 6 hr.
. Spring & Fall 21 to 30 days 14 to 21 days 3 to 5 feet deep
. Winter 30 to 60 days 21 to 30 days .
SHRUBS
HEDGES & VINES		 . IN GRASS LAWNS IN DESERT
LAWNS
. Summer 7 to 14 days 5 to 10 days 1 to 2 hr.
. Spring & Fall 10 to 20 days 10 to 14 days 2 to 3 feet deep
. Winter 20 to 30 days 14 to 21 days
CACTUS Apr. - Nov. Only when wilt is obvious 1/4 to 1/2 hr.
FLOWERS Summer 2 to 5 days 1/4 to 1/2 hr.
. Spring & Fall 5 to 10 days 12 to 15" deep
. Winter 7 to 14 days .
GARDEN Summer 2 to 5 days 1/2 to 1 hr.
VEGETABLES Spring & Fall 5 to 10 days 15 to 20" deep
. Winter 7 to 14 days .
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