Botrytis cinerea on strawberry

Botrytis cinerea on strawberry

© Rasbak

Type: Diseases

Grey mould (Botrytis cinerea)

This fungus thrives in cool, damp and over-crowded or badly-ventilated conditions. Almost any crop can be affected. The fungus generally enters through existing wounds and healthy plants are less likely to be affected.


  • Generally start with a brown rot followed by the grey fluffy mould which gives it its common name
  • Lettuce commonly show a reddish-brown colour and the leaves may break away from the roots
  • Tomatoes may show spots on the surface

Prevention & control

  • Ensure good ventilation and avoid over-crowding
  • Keep weeds under control
  • Maintain good hygiene by removing dead plant material where the disease can survive as sclerotia (like seeds) between crops
  • Remove and burn affected parts
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