Grey mould

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Grey mould
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Grey mould on tomato fruit
Scientific Classification
Kingdom: Fungi
Phylum: Ascomycota
Subphylum: Pezizomycotina
Class: Leotiomycetes
Order: Helotiales
Family: Sclerotiniaceae
Genus: Botryotinia
Species: Botrytis cinerea and Botrytis fabae

Grey mould or gray mold (Botrytis cinerea) is a fungal pathogen of plants with a wide variety of hosts. B. cinerea is also a cause of damping off in seedlings.

Identifying Features[edit]

Grey mould usually starts on a damaged area of stem. Other parts of the plant may then be infected - diseased flower stalks cause fruit drop.


Cut out diseased areas and remove all rotting parts.


Reduce humidity by adequate ventilation and avoid overcrowding. Remove decaying leaves and fruit. No systemic sprays are available.