Red Thread disease (Laetisaria fuciformis), also known as Pink Patch, is relatively common during the summer months. Red Thread is a fungal disease that affects grasses, particularly cool-season grasses like fescues and ryegrass and is more prevailent in established lawns.

During the summer, warm temperatures combined with high humidity can create favourable conditions for the development and spread of Red Thread. The disease often becomes more noticeable in lawns when the weather is warm and wet.

Red Thread disease appears as patches of grass with pink or red thread-like structures, called sclerotia, extending from the tips of the blades. As the disease progresses, these structures become more apparent, and the affected grass blades may turn brown, giving the lawn an unsightly, patched appearance.

To manage Red Thread disease in your lawn, you can take the following preventive measures:

Proper Lawn Maintenance

Maintain a regular lawn care routine, including mowing at the appropriate height for your grass type and ensuring adequate fertilisation.

Improve Air Circulation

Promote better air circulation by trimming overhanging branches and thinning out dense vegetation around the lawn.

Avoid Excessive Nitrogen

While fertilisation is essential, avoid excessive nitrogen fertilizers, as they can promote the rapid growth of susceptible grasses, making them more susceptible to diseases like Red Thread.

Watering

Although red thread typically appears during bouts of wet weather, it still exists in all conditions. Water your lawn early in the morning to allow the grass blades to dry quickly and reduce the length of time the grass remains wet, as this can help prevent the spread of the fungus.

Fungicides

In severe cases, you can use fungicides labelled for Red Thread disease, but it's best to consult with a local lawn care expert before applying any chemicals.

By being vigilant about your lawn care practices and taking early action if you notice signs of Red Thread disease, you can help keep your lawn healthy and beautiful throughout the summer season.