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Red thread

Red thread (Laetisaria fuciformis) is a very common lawn disease.  Brown patches with a red thread-like fungal growth makes spotting this disease exceptionally easy.  Although the patches can look like the grass is dead recovery can be made with the correct actions and is usually more of a nuisance than a fatal lawn disease.

Grass varieties such as red fescues are more susceptible however other fescues, bents, ryegrasses and poa annua can also be targeted by this disease.

Red thread can develop all year round however it is predominantly caused by a wet summer and is a sign of a nitrogen deficiency.  Our programme takes this into consideration with a high level of nitrogen through the common periods of growth.

Ways to keep red thread at bay

  • Good soil condition to keep healthy roots.
  • A sharp mower blade.
  • A consistently aerated lawn.
  • Keep thatch at bay with scarification.
  • Good drainage.
  • Correct nutritional programme.