Laetisaria fuciformis

Red thread

Other common names:

Not applicable.



Red thread is commonly noticeable when the pale red or orange fungal growth (red threads) are present on the leaf tips. A pink flock of mycelium may be produced. The disease favours temperate conditions and thrives when fertility is lacking and foliage is wet for consecutive days.


Susceptible Turf:

Cool-season turfgrasses. The disease is more pronounced in species of ryegrass and fescue.



First symptoms is the tan colour of dead leaves. Pink to pale red or orange fungal growth appear. Circular or irregular shaped patches up to 15cm in diameter become infected with the disease. The appearance is water-soaked and shortly after the turf dies.


Control options:

  • Pesticides: See available tabs below for registered products. Use as per label instructions.
  • Integrated Pest Management (IPM): Use a combination of approaches listed on this page.
  • Cultural:
    • Mow routinely and collect and dispose of infected clippings if possible.
    • Maintain adequate nitrogen
    • Reduce shade and increase air circulation
    • Avoid frequent watering in the late afternoon.
  • Mechanical: Nil.



Turf Finder or its developer accepts with no responsibility for any consequences whatsoever resulting from the use of any information or product(s) listed herein. Products are to be applied as per label instructions.

Control Options

Heritage Maxx Fungicide


Preventative Turf Fungicide

Heritage Maxx Fungicide


Preventative Turf Fungicide