Ask a Question
Notify Me On Question Update
Email this Question
I have rings in my lawn that are about two feet wide. I suspect they are fairy ring, but the description for fairy ring doesn't quite fit. The inside of the circle is not lush and green, it looks the same as the rest of the lawn. There is just a semi-dead cirle surrounding good lawn. Do you have any help for me.
Rate This FAQ
Without actually seeing your lawn it is difficult to give you an accurate diagnosis of your problem. There are several reasons that your lawn may have brown spots or rings. The most common culprit is water. If you have a sprinkler head that is blocked, missing, or broken it can cause some parts of your lawn to become brown. A check of your sprinkler system can help you to identify if this is the problem. You can find a once a month sprinkler system checklist at http://www.conservewater.utah.gov/OutdoorUse/MaintenanceCheck.htm.
Another reason you may be seeing brown rings in your lawn may be insect related. Before applying any pesticides it is very important to identify what kind of insect it is. The best way to diagnose an insect problem is to check the lawn. Insects typically feed on the edges of the brown spots. If you do find an insect but are unsure of what kind of insect it is the Utah Pests Webpage http://utahpests.usu.edu/ has a lot of information including pictures. You can also bring a sample of the insect into the USU Extension Office located at 2001 S. State Street for identification. Our office hours are Monday through Friday 8:00 am to 5:00 pm.
A third reason may be a fungal disease. There are two different diseases that match your description. The first is Necrotic Ring Spot. This is a cool season disease that shows up March through May and September through November. This particular disease is very common in 2 to 5 year old bluegrass lawns that have been established from sod. It shows up as dead circles or arches of browning lawn that range in size from a few inches to a few feet that are surrounded by a patch of green lawn that gives a donut appearance. The second disease is called Summer Patch. It has very similar symptoms as Necrotic Ring Spot. It becomes evident May through September. Some recommendations in treatment for fungal diseases are:
1) Control thatch buildup with regular core aeration at least once a year.
2) Water less frequently but to greater depth. The soil should be moistened 8 – 10 inches deep.
3) Remove layers of leaves from lawn during winter.
You can learn more about these turf diseases at http://utahpests.usu.edu/plantdiseases/htm/turf/turfdiseases.
To help provide you with a better diagnosis of what is happening in your lawn and a better treatment plan you can bring a sample into the USU Extension Office. To take your sample, dig a 4- to 6-inch chunk of lawn (including the soil) on the margin of a brown spot. Include a section with both living and dead turf.
Submit Your Suggestion
Other Questions In This Topic
- Do you have some advice on how to control mallow weeds? This has been an ongoing problem that even the powerful herbicides can only contain for just a few weeks. They always come back and completely overrun my garden. Any advice?
- Yesterday I applied "Scotts Turf Builder Plus 2 Weed Control" to my lawn. Unfortunately, I had the drop spreader set incorrectly. As a result I later discovered that I had accidently applied 4-5 times as much fertizer as specified on the bag. Will this damage the lawn? Is there anything I can do to prevent damage?
- What herbicide/killer do we use to eradicate "salt cedar" & cheat grass??
- Our grass is dying and we suspect a worm/grub problem since we have seen some yellowish worms come up when we have raked the thatch layer. When is the best time to treat to kill the worms? What is best to kill them if we don't know exactly what species they are? How long after treatment can we prepare and plant new grass seed?
- I am in West Valley city, and for the past 3 years my grass has looked really good, and last year, the entire front park lane died, and I now have large areas in the front yard that are dead as well. I have heard of grubs, however I have no idea how to identify what is going on with the grass or how to treat it. You can pull up larges patches of grass easily, there don't appear to be any roots in some areas and I would like my grass to be pretty again. What can you recommend?
- I live at an elevation of 6000ft. I am West of Cedar City in the mountains. I would like to know, what is the best low water and high traffic grass I should plant. I would like the type of grass that will stay green as early and as long as possible as well. Thank You Also, any good shade varieties?
- I live on 25 acres on the border of Summit and Wasatch Counties at an elevation of 7,000 ft. I need to add some trees to the landscape both evergreen and shade? What are good choices for my high and cold location?
- What's killing Spruce and Pine trees in Utah?