Brown Patch is one of the most common summer lawn diseases in our region, which affects homeowners with fescue lawns. The effects can be unsightly and aggravating for those who appreciate well-kept lawn, and even fatal to the grass plant itself.

What is Brown Patch?

The disease is exactly what it's called, a brown patch that appears in the lawn, and typically multiple patches appear. These spots are usually circular, brown, and can range from a few inches to a few feet in diameter. Brown Patch is best known for targeting cool season grasses such as tall fescue and rye grass, but can affect warm season grasses such as Zoysia.

What causes brown patch?

The most common cause of this disease is the weather. Long periods of hot and humid weather promote the perfect climate for this disease. The conditions are ideal when the low temperature is 68 degrees or more overnight. Another important factor contributing to the brown stain is too much nitrogen in the soil, excessive watering or rainfall, and a lawn that has not been aerated or thickened. Ventilation and coring reduce some of the soil compaction and allow the soil to breathe properly.

How to treat brown patch?

One of the best treatments is to do proper lawn care, follow the right irrigation habits, aerate the lawn, and be patient. As soon as the night temperature is constantly below 68 degrees, the brown stain begins to fade naturally. However, for anyone who wants to treat this disease quickly, curative fungicide treatment can be used. However, this can be an expensive option.

sum it up

In summary, brown spots, like any other disease, are unsightly, but can be treated with the right time and patience. Just as easily as Mother Nature can cause an illness, she will take it away.

It is always a good idea to contact a lawn care professional and ask questions. Take a look around, ask friends or family, and research the Better Business Bureau for a company you can trust.

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For more information, click the link to an article published by the St. Louis Post-Dispatch on June 24, 2015