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Your February Landscape Watering Reminder

Post Date:02/08/2019 3:07 PM

February has started out with some cool temperatures and two nice rains. The rains we’ve had the last few months are helping to water our plants and germinate wildflowers but are also helping to germinate weeds. So, don’t forget, moist soil makes for easier weed removal! Weeds will compete with your plants for water and it's best to remove them BEFORE they go to seed. NEVER use strong weed killers or soil sterilants (labeled total vegetation killer, driveway & sidewalk killer, TRIOX, etc.) as they persist in our desert soils and will impact plant roots.

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

Lawn watering

  • Summer grass (Bermuda) - once every 21 days
  • Overseeded cool season grass (rye) – once every 7-9 days

If trees and shrubs are on the same valve

  • Desert Adapted - once every 28 days
  • High Water Use - once every 12 days

Tree watering

  • Desert Adapted - once every 36 days
  • High Water Use - once every 14 days

Shrub watering

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

Shrub, Groundcover, and vine watering

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

Cacti and succulent watering – once every 28 days

Annuals watering - once every 6-9 days

Wildflower watering – once every 10-12 days

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


HOT OFF THE PRESS, er, ah… the INTERNET: Landscape Watering by the Numbers Interactive Watering Guides! We have just finished the new and improved version of our online guides, and now offer the book (where this monthly reminder originates) as a PDF or a flipbook. Hint: the online guide does the math for you.

Plant Propagation Pruning Workshop. Sat. Feb. 23, 1-3 p.m. Red Mountain Library. Leave the hedge trimmers in the shed because they'll discuss how to keep plants looking natural as well as tidy with natural pruning. They will also talk about propagating plants, from both seeds and cuttings.Taught by Master Gardener, Laura Ward. Free.

Registration IS Now Open for SRP’s 12th Annual Water Conservation Expo! Sat. Mar. 2, at SRP’s PERA Club. SRP water and power customers can purchase a SMART controller, attend a class and learn from exhibitors. This year there are two controller options to purchase, 1. Rain Bird ESP-SMTe for $60 ($368 value) or 2. Rachio 3 Smart controller, Wi-Fi enabled for $60 ($229 value). Expo is free but you must register to reserve a controller to purchase!

Find these great stories at Water – Use It Wisely:

  • WHY DO WE NOT HAVE WATER RESTRICTIONS? Reposted from the Arizona Municipal Water Users Association (AMWUA) experts, this will answer that nagging question… we’re in a desert, we’re in a drought, and we are facing shortages of Colorado River water. Shouldn’t we be using less?
  • LANDSCAPING WITH NATURE – XERISCAPE – Written by professor and extension specialist, Ursula Schuch, this article provides great information about our desert ecosystems, the principles of Xeriscape, and plant selection ideas.

Thinking of a Landscape Installation or Renovation? Here are three great resources:

**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.


Cheeseweed or Malva parviflora. If we could find a valuable use for this handsome winter weed, we'd all be rich!


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