Botrytis is fungal disease of ripe soft fruits including grapes, strawberries and tomatoes.

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Botrytis causes grey rot of soft fruits in warm humid conditions. In drier conditions it is known as noble rot in vineyards when it affects grapes. Sweet wines such a sauternes need the noble rot to concentrate the grape sugars. In other fruit such as strawberries and tomatoes it rapidly makes the fruit inedible.


  • On grapes, strawberries and other soft fruit use Organic Super Sulphur as a preventative.
  • Spraying should stop 7 days before harvest.
  • Also improve ventilation around fruits and prevent them being in humid conditions if possible.
  • On non-crop fruit and plants use PLANThealth Spectrum.

Did You Know Did You Know

  • In the botrytis infection known as "noble rot", the fungus dehydrates the grapes, leaving a higher percent of grape solids including sugars, fruit acids and minerals. The result is a more intense, concentrated final product. Wines have the aroma of honeysuckle and a bitter finish on the palate.
  • Botrytis fruit rotting disease is caused by the fungus - Botrytis cinerea

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