Landscape Watering Reminder - October

The record rain on Sept. 27 should have your established plants well watered for a week or two. Temperatures have been cooling off nicely after sundown and we may just be done with triple digits for the year. With shorter days and cooler nights, you can cut back the frequency of your watering.

Fall is a great time to plant, so be sure to go to your local nursery or upcoming plant sales (see bonus tip below). If you're thinking of overseeding your lawn with winter rye grass, we've got two options: 1. Check out our top ten reasons not to, and 2. If you're going to, follow the advice below to keep the watering efficient.


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

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

Plants at nursery

The Fall planting season has arrived! Learn about plant sales, planting wildflower seeds and more in or bonus tips below.

Lawn watering:
Summer grass (Bermuda) - once every 6 days
Overseeded cool season grass (rye)-4x per day for 1st 7-10 days to germinate, then once every 3 days
If trees and shrubs are on the same valve:
Desert Adapted - once every 21 days
High Water Use - once every 10 days
Tree watering:
Desert Adapted -once every 24 days
High Water Use - once every 12 days
Shrub watering:
Desert Adapted - once every 18 days
High Water Use - once every 9 days
Groundcover and vine watering:
Desert Adapted - once every 18 days
High Water Use - once every 8 days
Cacti and succulent watering - once every 28 days
Annual & vegetable watering - once every 4-5 days

Wildflower watering - once every 1-2 days to germinate, then once every 3-5 days
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 version or request a free copy of the booklet at
Bonus tips

  • Oct. 18 from 5-9 p.m., be sure to stop by Celebrate Mesa family event at the Red Mountain Soccer Complex, 905 N. Sun Valley Blvd. This free event will include a parade of costumes, games, activities and more. Look for the City of Mesa Development & Sustainability Department and play our toilet toss game to win cool prizes!

  • Oct. 18 is our next Household Hazardous Waste Event from 8 a.m. to Noon at the East Mesa Service Center, 6935 E. Decatur. Collection events are scheduled 4 times each year to collect paints, oil, pesticides, batteries, CFLs, prescription drugs, tires, electronics and appliances.

  • Nov. 1, Green Streets Workshop! Help us plant a water-harvesting demonstration landscape in front of Mesa Urban Garden. 7:30 a.m. to 12:30 p.m. at 212 E. 1st. Ave. Learn more.

  • Nov. 22, Free Shade Trees by attending the SRP Shade Tree workshop at the City of Mesa Red Mountain Library. Learn more.

  • Fall planting season has arrived! Temperatures are cooler, and it's a great time to replace plants you may have lost during the hot summer. For fall planting, plant sales, and seed planting details check out our October Sustainability Savings Tip: Dig In: Fall is the Best Time to Plant. Send us your address and we'll send you a free packet of Sonoran Desert wildflower seeds!

  • Overseeding? Check out our Top 10 Reasons Not to Plant a Winter Lawn. If you're going to, keep it efficient with this UofA publication called Overseeding Winter Grasses.

  • Adjust your timer! If you haven't adjusted your clock in a while, now is the time to do so. Water needs for plants are about half as much as they were in June. Check out these step-by-step instructions to reprogram your timer.


    To register for monthly watering reminder emails, visit and click on Email Alerts located in the right navigation bar. Choose Landscape Watering Reminder, and follow the registration instructions. You can remove your name from the list at any time.

    For more information about Mesa's water conservation programs, visit