Brown Patch Disease and Disease Treatments in and around Charlotte, NC
Environmental Factors Contributing to Brown Patch
Brown patch disease is a common turf problem in the Charlotte area, and understanding the environmental factors that contribute to its development is key to keeping your lawn healthy. Brown patch fungus, known as Rhizoctonia solani, thrives when temperatures climb above 80°F and humidity levels are high—conditions most often seen in late spring, summer, and early fall (any stretches of hot and humid weather).
These periods of warmth and moisture create the perfect environment for active fungal growth, especially when lawns remain wet from morning dew, frequent irrigation, or poor drainage. These environmental factors directly influence disease development, accelerating the emergence and progression of brown patch when conditions are favorable.
Certain grass species are more vulnerable to brown patch than others. The grass types most susceptible include cool-season grasses such as tall fescue, as well as warm-season grasses like zoysiagrass. Brown patch is most common in tall fescue, especially in hot and humid conditions, and is considered the most common and important disease of tall fescue in the Southeast. Brown patch can occur on cool-season grasses during the late spring and can continue during the summer, with symptoms sometimes appearing even during early fall when weather conditions favor fungal growth.
However, all turfgrass species can develop symptoms of brown patch if the conditions are right. The disease usually causes thinned patches of light brown grass that are roughly circular in shape, ranging from a few inches to several feet in diameter, often with a distinctive doughnut-shaped pattern. Affected grass blades may display tan leaf spots with dark brown borders, and in severe cases, the disease can cause thinned patches and rotted leaf sheaths near the soil surface.
Several environmental factors can increase the risk of brown patch disease. Lawns with excessive thatch buildup, compacted soil, or poor drainage are especially susceptible, as these conditions keep the grass and soil surface moist for longer periods and influence the development and appearance of brown patch. Moist locations, such as shady or poorly drained areas, are more prone to brown patch outbreaks. Mowing with dull blades can also injure leaf blades, making it easier for brown patch fungus to infect the turf.
Overuse of nitrogen fertilizer, particularly during warmer periods, can promote lush growth that is more prone to infection. The brown patch fungus can survive in the soil for years in the absence of a susceptible grass host, overwintering as resting bodies called sclerotia, which germinate under favorable conditions to initiate infection.
To prevent brown patch, it’s important to adopt good lawn care practices. Water your grass early in the morning to allow leaf blades to dry quickly, and avoid watering when humidity is highest. Maintain your lawn at the proper height for your grass type, and prevent excessive thatch buildup through regular aeration. Monitoring soil pH and improving soil conditions can also help reduce disease severity. By staying proactive and addressing these environmental factors, you can help control brown patch and keep your lawn looking its best throughout the season.
Identifying the Problem: Signs and Symptoms of Brown Patch in Your Lawn
Spotting brown patch disease early is crucial for protecting your lawn from lasting damage. This common fungal disease can affect both cool season and warm season grasses, and its symptoms can vary greatly depending on the turfgrass species and local conditions. One of the first signs homeowners notice is the appearance of circular patches of light brown grass, which can range from just a few inches to several feet across. These patches often develop a distinctive doughnut-shaped pattern, with a ring of affected grass surrounding a center that may appear slightly healthier.
Look closely at the grass blades within these patches. Brown patch fungus typically causes tan leaf spots with dark brown borders, and in more advanced cases, you may see rotted leaf sheaths near the soil surface. Yellow patches that quickly turn brown are another telltale sign, especially during periods of hot and humid weather. Tall fescue lawns are particularly vulnerable, but warm season grasses like zoysiagrass can also be commonly affected.
Other symptoms of brown patch include thinned patches of turf, a general decline in lawn density, and grass that appears water-soaked or greasy in the early morning hours. The disease often starts in early spring and can persist through early fall, with the most severe outbreaks occurring in late spring and summer when conditions are warm and moist.
Several factors can make your lawn more susceptible to brown patch, including excessive thatch buildup, soil compaction, poor drainage, and overuse of nitrogen fertilizer. Lawns mowed with dull blades are also at higher risk, as torn leaf blades provide easy entry points for the fungus. Monitoring your lawn regularly for these symptoms—especially after periods of humid weather—can help you catch brown patch early and prevent its spread.
If you notice any of these signs, it’s important to act quickly. Implementing good lawn care practices, such as mowing at the proper height, watering deeply but infrequently in the early morning, and addressing soil conditions, can help prevent brown patch from taking hold.
By staying vigilant and understanding the symptoms of brown patch, you can take proactive steps to maintain healthy turf and keep your lawn looking its best throughout the season.
Five Preventative Treatments to Prevent Brown Patch
In a matter of weeks or even days, Brown Patch and other turf diseases can undermine the hard work done over the fall to get your lawn established. Diseases not only look bad, but can severely damage the overall lawn, taking multiple seasons to fully recover.
Hyatt Landscaping offers our preventative disease management program to combat this issue. Not only do we go after common diseases such as brown patch, but the application also covers a wide array of other diseases commonly found in turf. We begin treatments well before the fungus and disease become active, continuing throughout the hot, humid summer when favorable conditions exist.
Fungicide treatments are a key component of chemical control for brown patch and other turfgrass diseases. We apply fungicides preventatively starting in late spring or early summer, particularly before periods of hot, humid weather. Effective treatments involve applying fungicides containing azoxystrobin or propiconazole at the first sign of symptoms in hot, humid weather. Fungicides should be applied at 14- to 28-day intervals for effective control, and we alternate fungicide types (alternate fungicides) with each application to prevent resistance.
Fungicides can also be used on a curative basis, with the first application made immediately after the onset of symptoms. Preventative fungicide applications may warrant chemical control in areas where brown patch causes severe thinning on high-value turf. The best time to initiate fungicide sprays for warm-season grasses is when nighttime low temperatures reach 70°F.
Professional lawn care service providers like Hyatt Landscaping use high-quality, professional-grade fungicides that are more effective than store-bought options. For severe cases of brown patch, we recommend scheduling professional applications from local lawn care services for the best results.
This service is available to residential property owners in the Charlotte, NC area, including Matthews, Mint Hill, and Weddington. Give us a call at 704-888-5390 to sign up for this service today.
Our Brown Patch Control Service Ensures You're Being Proactive
Disease can be everywhere, even in your turf. Our disease prevention service offers a way to combat Brown Patch and other diseases from taking over your lawn. With this service, the product only lasts 14-21 days from the time of application, and fungicides should generally be applied at 14- to 28-day intervals, depending upon the specific product used. To prevent the buildup of resistance, we recommend using alternate fungicides with each application as part of an integrated disease management strategy.
While fungicides can be difficult to rely upon for complete control of brown patch, regular applications can improve the appearance of your lawn. This means that we proactively start you on a 5 treatment regimen to allow continual protection throughout the summer. Dependent upon the weather conditions, more applications may be necessary in the late summer to extend your coverage against an outbreak.
How Can You Help?
How you maintain and care for your lawn can affect how favorable the conditions are for fungus and disease to develop. Proper drainage, adequate mowing heights, and a balanced irrigation schedule can help reduce the likelihood of disease to develop in your lawn. Maintaining healthy turf through proper watering, aeration, and fertilization is essential to reduce disease susceptibility.
- Limiting Standing Water caused by poor grading and drainage, which creates the perfect environment for fungus and disease.
- Consistent Mowing at proper heights for your turf type is crucial to limiting risk of disease. Tall Fescue should be regularly mowed at around 4″ in height. Maintain mower height at 3.5 to 4 inches to strengthen grass and reduce susceptibility to brown patch.
- Watering Early in the morning and limiting how much moisture is present during the humid hours can help tremendously. Watering should only be done in the early morning to ensure grass dries quickly, reducing humidity around the blades. Watering should ideally be done in early morning to allow grass to dry before nightfall. When addressing brown patch, it is vital to cease all evening watering to prevent overnight moisture that promotes the growth of the fungus. Irrigating turf at night during hot and humid weather may exacerbate brown patch symptoms.
- Aerate lawns in the fall to improve drainage and reduce soil compaction, which can help mitigate brown patch.
- Avoid applying nitrogen-rich fertilizers during active outbreaks of brown patch, as nitrogen can exacerbate the problem.
- Avoid high nitrogen rates on warm season grasses to help prevent brown patch.
- Use slow-release fertilizers in spring and summer since higher nitrogen levels during these months can promote brown patch.
- Apply only moderate amounts of nitrogen fertilizer on turf with a known history of brown patch during summer.
- Maintain soil pH between 5.9 and 7.0 to help prevent brown patch, as acidic conditions may increase vulnerability to disease.
- Overseed with brown patch-resistant tall fescue varieties in the fall to help reduce the risk of future outbreaks.
- Good lawn care practices are the best way to prevent brown patch in the home lawn.
In the hot summer months, it is tempting to water your lawn more when it begins to show signs of stress, however it is important not to overwater. Proper mowing and watering techniques are necessary to the preventative aspects of disease control. Whether it be drainage or irrigation related, too much water can not only harm your turf but increase the disease’s ability to thrive.
Our Lawn Care Programs
While keeping your property free of Brown Patch Fungus is great, you can do even more for your lawn by signing up for one of our lawn care programs. These programs include multiple weed control and fertilization treatments throughout the year to provide your turf with everything it needs to thrive. Here is a quick breakdown of the lawn care programs we offer:
- Fescue Turf Care Package – This package includes 2 pre-emergent weed control treatments, a liquid iron treatment, a lime treatment, and multiple fertilization treatments.
- Fescue Turf Care Premium Package – This package includes everything in our Fescue Turf Care Package as well as preventative grub and armyworm control treatments, lawn disease control treatments, and Poa annua suppression treatments
- Warm Season Turf Care Package – This package includes weed control and fertilization treatments that are designed for warm-season turf.
Don't forget, some of our services are available a la carte!
Give Us a Call Today toSchedule Our Brown Patch Control Service.
At Hyatt Landscaping, we can help you keep your property free of fungus and disease via our Brown Patch control service, available to residential properties in and around the Charlotte, NC area, including the communities of Matthews, Mint Hill, & Weddington.
Call to schedule our Brown Patch control service, as well as our other lawn care services today! We have been offering our premium landscaping services since 1980, and we look forward to serving you and your property soon!