What is Red Thread and How Do I Remove It from My Lawn?

What is Red Thread and How Do I Remove It from My Lawn?

30th Jun 2023


Red thread is a fungal disease that can damage the appearance of your lawn. It is a common problem for homeowners, especially during the humid months of the year. The disease gets its name from the red or pink threads that grow on the infected grass blades. In this blog post, we will discuss what red thread is and how you can remove it from your lawn.

What is Red Thread?

Red thread is a lawn disease that is caused by a fungal pathogen called Laetisaria fuciformis. The fungus thrives in cool and moist environments and can survive in the soil for long periods. The disease often appears in patches and initially presents itself as small, circular, pink-coloured patches in the lawn. As the disease progresses, the patches can grow and merge together, forming larger areas of discoloured grass.

How to Remove Red Thread from Your Lawn

The good news is that red thread is not a deadly disease and can be treated with proper lawn care practices. The first step to removing red thread is to fertilise your lawn with nitrogen-rich fertiliser. This will help promote healthy growth and recovery of the infected grass. You should also make sure to water your lawn deeply and infrequently to prevent the disease from spreading. Avoid watering your lawn in the evening since this can create a moist environment that is ideal for the fungus to grow.

Another effective way of removing red thread is by physically removing the infected grass. This is especially necessary for severely infected areas. You can do this by mowing your lawn and collecting the clippings. This will help remove the fungus spores and prevent them from spreading.


Red thread may seem like a daunting problem, but it is not a cause for alarm. With proper lawn care practices, you can remove the disease from your lawn and restore its healthy appearance. Make sure to fertilise your lawn, water it properly, and physically remove the infected grass. By following these steps, you can prevent the spread of the fungus and keep your lawn in top condition.

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