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Watering Your Lawn During the Summer

With winter just around the corner in Australia, you might be wondering what you should do to keep your lawn healthy and green. Making sure that your lawn is watered correctly is important, but that begs the question: How long should it take to water your lawn in Perth? Here’s a general guide to help you know how long you need to run the sprinkler systems in your garden!

How Long Should It Take to Run Sprinklers in the Garden?

This depends on several factors: the sprinkler types, the season you’re in, and whether the lawn is established or not. As a general rule, you should turn off your sprinklers when it’s raining since too much water may cause the grass to rot. However, keep in mind that sometimes this may not be always the case.

If you’re dealing with a new lawn, you should note that their watering needs are different from established lawns. For new lawns, it usually takes at least 12 months before it grows a root system that is deep enough to achieve maximum drought tolerance. You should apply for a watering exemption and obtain a Certificate of Exemption from the Water Corporation if you will be taking care of a new lawn.

The following schedule is recommended for new lawns:

October 1 to March 31 (Hot Weather) April 1 to September 30 (Mild Weather)
Days 1-10:

Amount: 3.5 mm

Frequency: Thrice a day

Time: Before 9 AM, 12 NN, and at 3 PM

Days 1-14:

Amount: 4 mm

Frequency: Twice daily

Time: Before 9 AM and at 2 PM

Days 11-20:

Amount: 5 mm

Frequency: Twice daily

Time: 9 AM and 3 PM

Days 15-28:

Amount: 7.5 mm

Frequency: Once daily

Time: Before 9 AM

Days 21-28:

Amount: 10 mm

Frequency: Once a day

Time: Before 9 AM

Days 29-35:

Amount: 7.5 mm

Frequency: Every other day

Time: Before 9 AM

Days 29-42:

Amount: 10 mm

Frequency: Every other day

Time: Before 9 AM

 

Note that schedule may only be followed once you have been given a watering exemption. Also note that for new lawns, the retic may still be a bit more difficult to use when watering, so there will be times that you will need to hand water some areas.

How Long Should Sprinklers Run In Each Zone?

Each sprinkler system has a different recommendation. Consider the different reticulation systems being used in Perth when determining how long each sprinkler would run. In general, however, these are recommended sprinkler run times:

Pop up/fixed spray sprinklers

Pop up or fixed spray sprinklers are the traditional sprinklers which provide water coverage across the lawn. An important thing to remember when placing these sprinklers is that they must be placed in areas just right so that they create an overlap. This sprinkler system goes back into the ground once it finishes watering an area.

The recommended sprinkler run time for this is 13-16 minutes, with a reduced run time of 10 minutes if you are trying to conserve water. The typical hourly watering rate for pop up sprinklers is 35-45 mm.

Rotary sprinklers

Rotary sprinklers are ideal for exposed lawns and garden areas because of their rotational streams. This kind of sprinkler system is also relatively easy to fix, as you can visibly see if there would be any blockage. The recommended sprinkler run time for rotary sprinklers is 40-60 minutes, with a reduced run time of 30-40 minutes for those trying to conserve water. The typical watering rate per hour is 10-15 mm.

rotating lawn sprinklers

Gear Drive Rotator

Gear drive rotators release a single slow stream of water that moves in arch that covers large spaces, making them ideal for large home gardens and lawns. The stream released is around 6-11 meters. Note that this sprinkler system requires a 100% overlap to provide even coverage. This sprinkler system requires high pressure. The typical hourly watering rate is 10-20 mm, with a recommended run time of 30-40 minutes. If you are trying to reduce water use, then this can be reduced to 25-30 minutes.

Dripline sprinklers

Located under lawns and garden beds, dripline sprinklers provide water to the area which needs it most: the root system. Dripline sprinklers are perfect for lawns and gardens in warmer climates. As dripline sprinklers are a little more complicated, they should be installed by professional irrigators as well. The typical watering rate for dripline sprinklers is 15-20 mm, with a recommended run time of 30-40 minutes. However, you may reduce this to 20-30 minutes for conserved water usage.

Watering Your Lawn

Optimizing your sprinkler systems for watering your lawn is important to make sure that your lawns remain healthy and green all throughout the seasons. Check out your sprinkler systems before anything else, and proceed as needed. If you have problems or if you’re having some difficulty with your sprinkler systems, Green Oasis Lawn and Reticulation can help you with your retic problems. Contact us to get some clarifications and more lawn care tips!

 

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