Brown patch is a common lawn disease that can cause significant damage to your lawn if left untreated. It’s caused by the fungus Rhizoctonia solani and is prevalent in warm, humid weather.
Brown Patch often appears in circular patches that range in size from a few inches to several feet in diameter, and the patches have a characteristic brown or tan color.
In this article, we’ll discuss the causes and symptoms of this lawn disease, as well as ways to prevent and treat it.
I. Causes of Brown Patch
Brown patches thrive in warm, humid conditions and are most prevalent during the summer months. It can develop in lawns that are overfertilized or overwatered, as well as in lawns with poor soil drainage. Additionally, mowing the lawn too short or using dull mower blades can increase the risk of brown patches.
II. Symptoms of a Brown Patch
The most visible symptom of brown patches is the circular patches on the lawn that have a brown or tan color. The patches may be several inches to several feet in diameter and may merge to form large areas of dead grass. Infected grass blades often have a water-soaked appearance, and the disease often causes the grass to thin out.
III. Prevention and Treatment of Brown Patch
A. Lawn Maintenance Practices
Proper lawn maintenance practices can help prevent the development of brown patches. This includes proper watering and fertilization, as well as regular mowing at the correct height. It’s recommended to mow the lawn to a height of 2.5 to 3.5 inches, as shorter grass is more susceptible to the disease.
Fungicides can be used to control and prevent these lawn diseases. They should be applied at the first sign of the disease and according to the manufacturer’s instructions. Fungicides containing active ingredients such as azoxystrobin, propiconazole, and myclobutanil are effective against brown patches.
C. Proper Watering and Drainage
Overwatering and poor soil drainage can increase the risk of brown patches. It’s important to water the lawn deeply but infrequently, ensuring that the soil has a chance to dry out between watering sessions. Additionally, proper soil drainage can be improved by aerating the soil or using soil amendments.
D. Reseeding and Fertilization
If the brown patch has caused severe damage to the lawn, reseeding may be necessary. Choose grass varieties that are resistant to disease and fertilize the lawn appropriately to maintain a healthy and resilient lawn.
Brown patch is a common lawn disease that can cause significant damage to your lawn if left untreated. However, with proper lawn maintenance practices and timely treatment with fungicides, it can be effectively controlled. By maintaining a healthy lawn and taking steps to prevent brown patches, you can enjoy a lush and beautiful lawn all year round.