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About Red Thread

Red thread is a cool season disease that is commonly found on turfgrass in the northeast. It is most active at temperatures of 60 – 70 degrees F. Red thread creates irregularly shaped patches of tan grass that often have a pink to reddish cast because of pink mycelium on the leaves. At times these red strands are highly visible and give the disease its name.

This disease is prevelent when inadequate fertility levels are present in the soil. In extreme outbreaks of this disease, a fungicide application can be used to provide control of red thread. One of the best ways to prevent this disease is to have a good fertility program and aeration. This will also help to create a great looking lawn.