How to Test if Your Lawn has a Brown Grass Patch Disease How to Test if Your Lawn has a Brown Grass Patch Disease

What You'll Need
Gloves
Trowel

A brown grass patch on your lawn doesn't always mean that it has a brown grass patch disease. This can also be down to environmental factors. This guide will help you rule out these environmental factors to help get your lawn back to looking healthy and green. 

Step 1 - Check Soil Drainage

First, check the drainage around the brown patch with a trowel. Make sure you wear gloves. If you have had heavy rainfall and there is poor drainage on the lawn, this can cause patches. Water only needs to be standing on the grass for a day to cause brown patches. This is a particularly common problem if the lawn was put down less than a year ago and the soil underneath it was never plowed first. Also if the sod hasn't rooted very well then often brown patches will form in dry weather.

Step 2 - Look for Trodden Down Grass

Brown patches can also form on sections of the grass that have been heavily trodden on. Check that the grass hasn't been trampled down. 

Step 3 - Check for the Symptoms of Brown Patch Disease

If you are certain that the brown patches are not caused by any environmental factors, you should check for symptoms of brown patch disease. The patches are often doughnut shaped and will spread very rapidly. If you pull one of the blades from the patch, it should be brown all the way down to the crown, but the actual crown of the blade will still be green-colored. You may also notice white fungus at the edges of the patch if the weather is damp. 

 

 

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