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Your June Landscape Watering Reminder

Post Date:06/01/2017 4:25 PM

The party’s over! Temps will be 105-degrees and above starting Saturday. I hope your irrigation system is in working order. Be sure to water deeply at each irrigation for greatest efficiency. Are you seeing fruit drop on your citrus? Learn more below.

Did you know that starting in 2008, the National Weather Service defined our monsoon season to begin June 15 and end September 30? If you didn’t live here prior to 2008, you missed the methodical but quirky way we used to determine the start of the season. Learn more at AZ monsoon trivia. The point is, that you should be ready for wind, dust and power outages... and let's hope for some rainfall.

These recommendations are for plants that are established in the landscape (in the ground about 2 years).

Lawn watering

  • Summer grass (Bermuda) - once every 3 days
  • Overseeded cool season grass (rye) – grass dies out

If trees and shrubs are on the same valve

  • Desert Adapted - once every 14 days
  • High Water Use - once every 7 days

Tree watering

  • Desert Adapted - once every 16 days
  • High Water Use - once every 8 days

Shrub watering

  • Desert Adapted - once every 12 days
  • High Water Use - once every 5 days

Groundcover and vine watering

  • Desert Adapted - once every 12 days
  • High Water Use - once every 4 days

Cacti and succulent watering once every 21 days

Annual & vegetable watering - once every 1-3 days

Note: These recommendations are a general guideline only and may need to be modified for your specific site conditions.

++ Bonus Tips ++

Citrus June Drop is a normal occurrence this time of year, and is a natural thinning process. Learn about this and see other great pics in a UofA publication, Diagnosing Home Citrus Problems. If your leaves look healthy, it is not caused by lack of water.

Aug. 12: SRP Shade Tree Planting Workshop– Get two free shade trees from SRP to reduce cooling costs, improve air quality and lower the urban heat effect without using a lot of water! You’ll also learn about planting and caring for trees. RSVPbecause it fills up quickly. Two classes, 8 or 10 a.m. at Mesa Community College, 1833 W Southern Ave. Those who attended the class can pick up their free trees on Sept. 16 to plant in their yard.

DROUGHT! Yep! It rained, it snowed, but we’re still in a drought. Want the ‘Cliffs Notes’ to what’s going on? Check out the Five Things You Need to Know Right Now About Drought from the Arizona Municipal Water Users Association.

Ficus WhiteFly. Have you had trouble with tiny white flying bugs defoliating your Ficus tree? Learn more about this relatively new pest, though hot temps should reduce populations.

Splash! Hot summer days means it’s time to enjoy the pool. Check out these helpful Mesa sites:

Great WATER-saving Ideas are wading at your fingertips at Water – Use It Wisely. Don’t miss the Plant of the Month, featuring a beautiful San Marcos Hibiscus and the Celebrate AZ Water blog on the Hassayampa River Preserve.

Summer in the Desert is the time to delve into virtual landscaping. Visit our Landscape Care topics at Water – Use It Wisely to learn about summer-scaping, how to program your controller and more. You can also check out our 10-part Drab to Fab Backyard Rehab video series. Don’t miss our fun and entertaining page for the kids. A game of Tip Tank anyone? Youth under 10 can email us to request our fun, Wayne Drop summer fun package.

Summer is also a great time to take classes to learn more about gardening. Boyce Thompson Arboretum offers a Learn Your Lizards on June 10, Guided Bird Walk on June 11, Tree Tour on June 18, Guided Butterfly Walk on June 24 and more! Desert Botanical Garden has great classes offered through June with topics like All About Herbs, Watering and Controller Programming, and my personal favorite, After the Lawn is Gone and more

LAWN WATERING: If you're watering every day, you're watering too much! Our watering recommendations are based on science from the University of Arizona. It is healthier for grass if you apply .75 inch (3/4 inch) of water each time you irrigate to wet the root zone to a depth of about 8 inches. This encourages roots to go deeper into the soil where they are better protected from hot, dry winds. With this amount of water, your grass will only need watering once every 3 days in the hottest part of summer, and less often as we get into the fall months. How do you know if you're applying 3/4" of water? I thought you'd never ask! See pages 7 and 8 of our watering guide. Once you've found your run time for your specific system, you only need to change your frequency of watering through the year.

**Reduce your landscape watering 30 to 50 percent by adjusting your irrigation each season.** "Landscape Watering by the Numbers: A Guide for the Arizona Desert" will help you determine how much water to apply and how long to run your system. Visit the interactive Web site or request a free copy of the booklet at

ma_citrus fruit drop

An example of citrus June Drop.


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