Irrigation Schedule

 

Save water and grow a healthy lawn and landscape with an appropriate irrigation schedule. Automatic sprinkler systems make watering easy, but you should not "set it and forget it." Change your watering schedule as plants become established, as seasons change, and when it rains or temperatures drop below freezing.

You can use the Mesonet Irrigation Planner to help you get started with a good schedule. Below are simple tips to help reduce water while keeping your yard looking great.

BASIC CONTROLLER FEATURES

Click through these basic controller features to learn more about their function and suggestions for water efficient settings.

Date & Time

Make sure the date and time are set correctly. Use a backup battery so a power outage does not reset your system. If the date or time changes, your sprinkler may run at the wrong time.

Programs

A program is a group of zones that share the same start time(s) and watering schedules. Most residential controllers will have three or four programs labeled A, B, C, and D. These programs let you water different zones on different days with different run times. Check each program for its individual start times, run times, watering days, and seasonal adjust settings. Make sure no hidden settings cause your system to run longer than you expect or lead to a high water bill.

Stations or Zones

A zone is a group of sprinkler heads that turn on at the same time. Group plants with similar water needs in the same zone to maximize water efficiency. Some controllers use the terms "station" and "zone" to mean the same thing, but this can vary by model.

Start Times

A start time is the time of day when a specific program begins to run (i.e. 5:00 a.m.) Each program can have more than one start time, often up to six. Water early in the morning to reduce water loss from heat and evaporation. 

You can also use more than one start time to prevent runoff. This helps most in clay soil, compacted soil, or on slopes. This method is called "cycle and soak" and allows time for the water to soak into the soil before finishing the zone's run time.

Run Times

The number of minutes a specific zone will be watered (i.e. 5 minutes). An appropriate run time will depend on that zone's plant type, sprinkler head type, and number of watering days programmed per week. Spray heads put out about 1.5 inches of water per hour, while rotor heads put our about 0.5 inch of water per hour.

Water Days

Watering days are the day a program is set to run. Many controllers let you choose specific days of the week, every day, or odd and even days. Check your controller's manual to learn how to set the odd or even day option for you model.

Seasonal Adjust or Percent Adjust Feature

This setting adjusts all run times up or down by a percentage as the weather changes. For example, you might set it to 100% in July. When the weather cools, you can lower the percentage to reduce each run time without adjusting them one by one.

Off Position

This setting stops all watering but keeps your saved settings. Use it during rainy or freezing weather to prevent your system from running.

HOW TO PROGRAM YOUR CONTROLLER

Need help programming your controller? Watch the video above and follow the steps below to get started.

  1. Turn the dial to set the date and time. Use the arrows and the +/- buttons to enter the correct day, month, year and time. You only need to do this step once.
  2. Move the program toggle or press the program select button to choose Program A.
  3. Turn the dial to "Start Times" and choose the time you want the system to water. Set only one or two start times. Clear any extra start times so the system does not run by accident.
  4. After you set the start times, turn the dial to "Run Time." If you set more than one start time, divide the total watering time by number of start times. For example, if you want a zone to run for 12 minutes and you have three start times, set each run time to 4 minutes.
  5. Set your watering days under the "Advanced Watering Cycles" or "Set Days" settings. Choose odd or even days based on your address.
  6. Repeat these steps for Program B, C, and D if other zones need different watering schedules, such as turfgrass or flowerbeds.
  7. Turn the dial to "Auto Run."

CONTROLLER MANUFACTURER LINKS

Your controller's features may be slightly different from the steps above, especially if you own a smart or WiFi-enabled controller. You can find online guides for your specific controller on the manufacturer's website for your brand.

OTHER TIPS 

  • Do not mix sprays and rotors in the same zone. This can lead to under-watering.
  • Use sprinkler heads and nozzles from the same manufacturer in each zone.
  • Make sure your sprinklers provide head-to-head coverage.
  • Check your water pressure. If your sprinklers create a fine mist, the pressure is too high. You can install pop-up sprays with built-in pressure regulation.(PDF, 5MB)
  • Visit the manufacturer's website to find out how much water your sprinklers apply.
  • Consider installing a soil moisture sensor(PDF, 2MB), smart irrigation controller, or rain/freeze sensor.
  • Irrigation systems with automatic timers use about 47% more water than the average household. To maximize efficiency, consider upgrading to a WaterSense® labeled irrigation controller. These controllers measure soil moisture, turn off during rain, and prevent overwatering. View available options on the WaterSense® product list.