How to Protect Sprinkler Heads

Installing a Sprinkler Donut

Measure the diameter of your sprinkler head. Measure straight across the top of the sprinkler head to determine how large of a sprinkler donut you need to purchase. You’ll need a sprinkler donut with at least ⁄2 inch (13 mm) of extra space on each side.

Purchase sprinkler donuts for each sprinkler in your lawn. Sprinkler donuts wrap around your sprinkler heads when they are inactive as an added layer of protection. They are made of various materials, like plastic or concrete. Find a donut the right size for your sprinkler heads. Sprinkler donuts can be purchased at any lawn care store or online. Lightweight materials like plastic will float away after heavy rains.

Place the donut over the sprinkler so it’s in the center. Line up the sprinkler head so it is in the hole at the center of the donut. Put the donut on the ground and push it down with your foot to keep it in place firmly.

Cut 1 to 1.5 inches (2.5 to 3.8 cm) deep around the donut with a spade. Hold the donut to the ground with your foot and use a spade or shovel to cut the turf. Go all the way around the donut so it is easier to remove the grass. Use a long-handled tool so you can put a foot on the donut and so it does not shift while you are cutting.

Remove the grass and dirt from the area. Move the donut off of the area you’ve cut. Use the spade or a hand trowel to loosen the turf plug that you cut away. Once it’s loose and mostly removed, use your hands to clear any remaining dirt or grass from the area. Be gentle with whatever tool you choose. You do not want to damage the sprinkler in the middle.

Place the donut in the hole. Push the donut in with your hands so it is packed into the dirt. To make sure the donut is firmly in place and will not move, push with your foot to compact the dirt further. Make the top of the donut flush with the top of the soil. Since you cut along the edges of the donut, there should not be extra space that you need to fill in after you install the donut.

Trimming Grass around the Sprinkler

Place flags in the ground where there are sprinklers. Keeping flags in the area where your sprinklers are will remind you to use extra caution as you trim or mow around the area. Plastic yard flags can be purchased at any hardware or lawn care store.

Mow over the donut as normal. Since the donut surrounds the sprinkler and it is flush with the grass, there should be no problem running a mower over the area. Be mindful of where the tires are when you mow the lawn so they do not run over an unprotected sprinkler. If you don’t feel comfortable mowing over a sprinkler, use a weed whacker instead.

Clean grass cuttings from the donut after you mow. Unless you bag your grass clippings, there will be leftover cuttings in the center of the donut. Before you run the sprinkler system again, remove the clippings with your hand, or use compressed air or a leaf blower to push the grass out. Some donuts have sloped interior walls so that clippings and debris slide away from the sprinkler head so it is less likely to get clogged.

Use a sprinkler head trimmer to clear the grass if it grows over your sprinkler. Sprinkler head trimmers can be purchased at any lawn care or garden store. Push the circular end of the trimmer into the ground and twist. The trimmer will cut any grass that has grown around or over your sprinkler that your mower may not have reached. Sprinkler head trimmers come as a smaller handheld tool or as a long-handled tool. Either will work. An electric trimmer will work the most efficiently, but it will cost more money.

Cleaning Your Sprinkler Heads

Turn the sprinkler system off. Close the valve on your sprinkler system so there is no water flowing through. This may be done at either the control panel for your system or at the main pipeline.

Unscrew the nozzle from the base. Turn the nozzle counterclockwise to loosen it from the base. Once it’s removed, set it aside. Bring a paper towel or a rag with you when you clean to have an area to set aside the pieces. You don’t want to lose your sprinkler components in the lawn.

Remove the filter screen. The filter screen is a screw-shaped part of the sprinkler head that sits right underneath the nozzle. Simply pull the filter screen up and out of the sprinkler head. If it is dirty, there will be visible debris around it.

Rinse off the screen in a clean bowl of water. Move the filter screen back and forth in a small bowl of water to remove the debris. You may have to rub it with a clean cloth or your fingers to clean it entirely. Don’t use chemicals or cleaners. Residue may stick in the filter screen and then be sprayed across your lawn. A soft-bristled toothbrush can help clean your sprinkler heads.

Flush out the debris in the system. Other debris may have gotten further into your sprinkler system, so turn it on before you attach the screen and nozzle again. Let the water flow for 1 to 2 minutes or until the water runs clear. If there is still debris, you may have to unscrew the base so anything remaining is rinsed out.

Screw the sprinkler back together. Place the filter back into the base of the sprinkler and reattach the nozzle by turning it clockwise. Run your sprinkler system to see if the sprinkler head runs better. If not, you may need to clean further or replace the head.