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
- What can I do now to prevent weeds in my lawn?
- What is West Nile Virus and how can I keep myself safe from it?
- How late in the fall season can you lay sod in northern Utah?
- I am an architect, working with a client who wants to hydroseed a 2.5 acre parcel for use as a softball field. The area is currently planted in alfalfa. There will be some regrading (both cut and fill) of the field that will be required. The client would still like to hydroseed this year, likely near the end of September. Do we need to call for the alfalfa to be treated with a herbicide? If so, what is the process, and what herbicide should be used? Is there a waiting period between application of the herbicide and the hydroseeding? Must the herbicide be applied to the above-grade plants, or can the site first be cleared, then the herbicide applied to the gound and roots?
- We have a lot of scrub oak around our home. In some spots we have some ground cover and other area are bare. We would like to add a nice ground cover to mix in with the oak in these bare areas. Do you have suggestions for ground cover? Also, in one particular area, we have a large amount of grass growing in the ground cover surrounding the scrub oak. What is the best way to get rid of this grass? Is there a ground cover that can overtake the grass?
- 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?
- Why do lilacs do so well?
- Spotted spurge is taking over my lawn. What can I do now, in these hot August temperatures, to knock back this weed problem?