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Your November Landscape Watering Reminder

Post Date:11/07/2017 6:45 PM

We didn’t have to dial back our clocks an hour like most of the country did this past Sunday, but it is a great reminder that it’s time to cut back on watering. Water needs for plants are only one-third the amount needed compared to the summer months. Did you plant winter ryegrass? Once it has germinated, be sure to cut back on the watering frequency to avoid disease problems!

While there have been a few clouds and localized light sprinkles, do you realize how long it’s been since we had a good rain? We have gone through the months of September and October with no rainfall. Those months typically average over a half-inch of rainfall each. It’s likely that this will be a dry winter for the southwest.

Recommendations below are for plants that are established in the landscape (in the ground about 2 years).

Lawn watering

  • Summer grass (Bermuda) - once every 14 days
  • Overseeded cool season grass (rye) - 4x per day for first 7-10 days to germinate, then once every 7-10 days

If trees and shrubs are on the same valve

  • Desert Adapted - once every 24 days
  • High Water Use - once every 11 days

Tree watering

  • Desert Adapted - once every 27 days
  • High Water Use - once every 12 days

Shrub watering

  • Desert Adapted - once every 21 days
  • High Water Use - once every 10 days

Groundcover and vine watering

  • Desert Adapted - once every 21 days
  • High Water Use - once every 10 days

Cacti and succulent watering - if needed

Annuals watering - once every 5 days

Wildflower watering - once every 1-2 days to germinate, then once every 7-10 days

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


  • BEEKEEPING BASICS Sat, Nov. 18 from 2:30-4 p.m. Beekeeper, John Phillips, explain his work with bees and his honey harvest, demonstrates the equipment he uses, and will offer honey tasting samples. FREE at Mesa Main Library, 64 E 1st Street.
  • DRAB TO FAB BACKYARD REHAB. Watch this 10-part video series that shows the backyard transformation of last year’s lucky winner of the Water – Use It Wisely contest. Learn more about the story and click on the link under each video for even more helpful information.
  • BUGS ON YELLOW BELLS? Have you noticed brown leaves on the tips of your yellow bells or orange bells? A small caterpillar (from a moth) has been attacking these species. It rolls the leaves and is usually found encased in silk. Don't confuse it with a watering problem. Trim off damaged stems or spray with a safe product with the ingredient Bacillus thuringiensis or BT. The plant should recover.
  • November is a great month to perform irrigation improvements. Check for leaks by looking for soggy ground or eroded soil. Replace broken sprinkler heads and check that sprinkler spray is not blocked by grass or other obstructions. Fix or replace clogged or missing emitters, and move emitters out to the dripline as trees grow. You may also want to adjust emitters for plants as they grow.
  • DESERT LAVENDER is the Plant of the Month. It has fragrant leaves, attracts pollinators, and is drought tolerant. It’s still a great time to plant and you can find details on this plant and more at Water – Use It Wisely’s Plant of the Month series.

**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 website or request a free copy of the booklet at

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Be sure to cut back on your watering if you overseeded. Too much water can cause disease that will kill new seedlings.




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