How To Identify & Treat Brown Patch Disease In Your Lawn

Rated 4.8 Across 500+ Reviews


Brown patch disease, caused by the fungus Rhizoctonia solani, is a common and destructive problem for many homeowners across the globe. It thrives in warm, humid conditions, leaving unsightly brown patches in its wake and threatening your lawn's health. This article delves into the identification and treatment options for brown patch disease, empowering you to tackle this issue effectively.

Identifying Brown Patch Disease

Identifying brown patch disease is crucial in order to treat it. Treating it early is the key to keeping it from spreading. Below are the signs and symptoms to look for in order to identify it.


  • Circular or irregular brown patches ranging from a few inches to several feet in diameter.
  • Patch edges may appear water-soaked and have a reddish-brown halo.
  • Blades within the patch turn yellow, then brown, and eventually die.

Conditions Favorable For Disease

  • Warm and humid weather (above 80°F) with frequent rain or irrigation.
  • Overwatering or poor drainage leads to saturated soil.
  • Excessive nitrogen fertilization.
  • Weakened turf due to stress, injury, or underlying deficiencies.

Treatment Options

As always, prevention is the key to keeping your lawn free of pesky weeds or diseases. Fortunately, there is a wide range of practices that can be done to keep this disease from forming and and treating the spots where it appears.

Cultural Practices

  • Improve drainage: Aerate your lawn to promote air circulation and prevent waterlogging.
  • Adjust watering practices: Water deeply but less frequently to encourage deep root growth and avoid creating a constantly moist environment.
  • Maintain proper mowing height: Mow according to your grass type to allow for good air circulation and prevent excessive stress.
  • Reduce nitrogen fertilization: Over-fertilization can weaken turf and make it more susceptible to disease.
  • Remove diseased clippings: Avoid spreading the fungus by bagging and disposing of infected grass clippings.

Fungicide Treatments

Fungicides: Apply fungicides specifically labeled for brown patch disease when conditions are favorable for the fungus and symptoms are first noticed.

  • Preventative: Applied before disease symptoms appear, often recommended for high-risk areas.
  • Curative: Applied after symptoms appear, aiming to stop further spread and promote recovery.
  • Follow application instructions carefully: Ensure proper mixing, application rates, and safety precautions.
  • Consult a professional: Consider seeking guidance from a lawn care professional for product selection and application techniques.

Additional Tips

  • Timing is crucial: Early intervention is key to successful control. Act promptly once you notice symptoms.
  • Monitor your lawn: Regularly inspect your lawn for signs of disease and other issues.
  • Promote healthy turf: Maintaining a healthy lawn through proper care practices is the best defense against brown patch and other lawn diseases.
  • Consider alternative solutions: In some cases, cultural practices alone may be sufficient to manage brown patch. Biocontrol options may also be explored in consultation with a professional, like those at Holmes Lawn & Pest.

While brown patch disease can be challenging, understanding its identification and treatment options empowers you to take action and protect your lawn. By implementing cultural practices, considering fungicidal treatments when necessary, and following responsible lawn care practices, you can effectively manage this disease and maintain a healthy, vibrant green space.

Disclaimer: This information is for general educational purposes only and should not be construed as professional advice. Consult a qualified lawn care professional for specific recommendations and treatment plans tailored to your unique lawn and circumstances.

Latest News & Blog

8 Common Questions About Fall Lawn Care In Utah

Have you ever asked neighbors how to keep your lawn in Utah protected and looking great through the unpredictable fall weather? Come get the answers to those questions here!

Learn More

8 Common Questions About Summer Lawn Care In Utah

As summer sets in, your Utah lawn faces many hazards from improper maintenance and damaging heat. Come get the answers you need to some common questions about summer lawn care!

Learn More

How To Identify & Control Rust In Your Lawn

Did you know the grass in your lawn can start to rust over time? Well... sort of. Come learn all about lawn rust and what you can do about it!

Learn More