Motivated Maintenance
Professional Lawncare and Landscaping
Serving McKinney, Princeton, New Hope, Lowery Crossing, Fairview and Lucas, Texas

Landscaping and Irrigation services provided throughout Collin, Dallas, and Rockwall Counties


How Often Should I Run My Sprinkler?

For information on local watering restrictions click here.

Honestly one of our most frequently asked questions is, “ How long should I run my sprinkler?” There are some certain things we must keep in mind.

First, the types of heads that are in your system, weather they be pop-up spray heads or pop-up rotary heads. These two heads are different because of their precipitation rates (the amount of water they put onto a specific area within a specific amount of time). Pop-up spray heads have a much higher precipitation rate (P R) than pop-up rotary heads. Therefore these two types of heads should never be placed on the same zone.

Second, your soil type is also necessary to know. Here in McKinney and around are high clay content. Clay soils can only absorb approx. .28” per hour.  The amount of water your lawn can absorb at one time is called,” absorption rate or percolation rate.” The design of your system may make these times vary. Most systems “should be” designed for matched precipitation.

Example: if a 15” quarter spray uses 1 gallon per minute (G P M). A 15’ half produces 2 GPM and a 15’ full spray produces 4 GPM. These rates truly vary from manufacturer and from design. If we need 1” of water per week: pop-up spray heads emit approx: 1” per hour. If clay soil can only absorb approx:.28” per hr set sprinkler to only run the required amount of time necessary to achieve .28” at one time. Fifteen minutes. would equal approx. time necessary to water without excessive run-off. If you have the ability to set multiple times on your irrigation controller, i.e. 5mins x 3 times per day=15mins. 15mins x 4 times a week = 1” or 1hr per week. This is to improve deep watering and to reduce excessive watering and run-off.

If we need 1” of water per week: pop-up Rotary heads emit approx. .28” per hour. Rotary heads need to run 4 times as long as pop-up spray heads. 20mins x 3 times per day= 1hr or .28” 1 hr/60mins x 4 times per week= 1” per week. This is to improve deep watering and to reduce excessive watering and run-off.

Matthew McMenamy LI # 8050


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