Knowledgebase
How do I control red threads that are appearing in my lawn?
Posted by Dobies Staff on 28 August 2014 10:01 AM

Red Thread disease is one of the most common fungal disease of lawns especially on light or poor soils. This fungus frequently attacks the finer bladed grasses, especially under warm, moist conditions in late spring, summer and early autumn. To help avoid attacks do not cut the grass too short and feed the lawn regularly each spring or autumn using an appropriate fertilizer for the time of year.

In the first stage it takes the form of pink or red gelatinous growths attached to the stems and leaves, sometimes joining the blades together. As it develops further, thin short attachments of a reddish colouring, stand out prominently from the withered leaves, giving the common name of Red Thread Disease.

It is important that all affected grass cuttings are destroyed and not added to the compost bin or used as a mulch, for not only do the red thread-like attachments survive if broken off, but the large number of spores produced may also be spread to infect other areas.

Fortunately, the fungus does not cause such high mortality among the grasses as some other diseases, but it may result in large areas of turf assuming a most unsightly bleached appearance. The fungus should be controlled as soon as possible and never allowed to remain unchecked. The spores may be spread on shoes or any lawn care equipment and can be rapidly spread over large areas.

To control Red Thread Disease improve the drainage by aeration and apply Bayer’s Lawn Disease Control, available from garden centres.

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