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Leaf mould can develop rapidly to cause significant yield loss in greenhouse-grown tomatoes. It is rarely seen on outdoor crops.
Leaf mould is a fungal disease that affects the foliage of tomatoes, particularly those grown in greenhouses. You may sometimes see the causal fungus referred to as Fulvia fulva or Cladosporium fulvum, but it is now known as Passalora fulva. Symptoms are sometimes confused with those of other foliar diseases such as grey mould or tomato blight.
The first symptoms of leaf mould can develop in April or May, but it is more usually found in June or July and can develop quite suddenly. You may see the following symptoms:
No fungicides are available to home gardeners for the control of tomato leaf mould.
Disposing of diseased materialGrey mouldPotato and tomato blightTomatoesTomatoes: fruit ripening problemsTomatoes: fruit splitting and crackingTomatoes: leaf problemsTomatoes: stem problemsTomato viruses
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