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Understanding and Managing Dollar Spot Lawn Disease in Houston, Texas

Maintaining a lush, green lawn in Houston, Texas, comes with its own set of challenges, and one common issue that homeowners may encounter is the dollar spot lawn disease. Dollar spot is a fungal disease that affects many types of grasses, particularly those commonly found in lawns across the region. Understanding the characteristics, causes, and effective management strategies for dollar spot can help homeowners keep their lawns healthy and vibrant.

Characteristics of Dollar Spot

Dollar spot is a turfgrass disease caused by the fungi Sclerotinia homoeocarpa. It typically manifests as small, round, straw-colored patches on the lawn, resembling silver dollars, hence the name “dollar spot.” The affected grass blades exhibit characteristic lesions, and in severe cases, these lesions can merge, causing larger dead areas in the lawn.

Causes of Dollar Spot in Houston

Several factors contribute to the development of dollar spot, especially in the warm and humid climate of Houston:

Environmental Conditions: Dollar spot thrives in warm and humid conditions, making Houston an ideal environment for its development. The disease is most prevalent during periods of high humidity and moderate temperatures.
Grass Type: Certain grass species, such as Bermuda grass and Zoysia grass, commonly found in Houston lawns, are more susceptible to dollar spot. However, it can affect a variety of turfgrasses.
Soil Conditions: Compact, poorly-drained soils with insufficient aeration can create an environment conducive to dollar spot development. Proper lawn care practices, including regular aeration, can help prevent this.

Prevention and Management Strategies

Proper Lawn Care Practices

Fungicide Application

Avoid Excessive Nitrogen Fertilization

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Dollar spot is a common lawn disease in Houston, Texas, but with proper knowledge and proactive management strategies, homeowners can keep their lawns healthy and vibrant. Implementing good lawn care practices, monitoring environmental conditions, and taking timely action with appropriate fungicides can go a long way in preventing and managing dollar spot. Regular attention to the overall health of the lawn will not only help control this disease but also contribute to a resilient and beautiful lawn throughout the year.