Infected material should be deeply buried (below the depth of cultivation), consigned to the local council green waste collection or burned, rather than composted (see the 'Biology' section, below).Leaf mould doesn't cause lesions on the stems or extensive fruit decay, however. Visible growth of the leaf mould fungus on the underside of affected leaves is greyish-brown rather than white, but if the leaf tissue has been completely killed this may be difficult to see. Greenhouse-grown tomato plants can also be affected by a different disease called leaf mould, which produces very similar symptoms on the leaves to those of blight. Watersoaked patches, turning brown, can appear on green fruit, whilst more mature fruits will decay rapidly.These lesions can lead to collapse and death of leaves, stems or even the entire plant Brown lesions may also develop on the leaf stalks (petioles) and stems, again with white growth sometimes visible under wet or very humid conditions.During suitable conditions, when the pathogen is spreading actively through the leaf tissues, the edges of the lesions may appear light green, and a fine white 'fungal' growth may be seen on the underside of the leaves The initial symptom of blight is a rapidly spreading, watery rot of leaves, which soon collapse, shrivel and turn brown.You may see the following symptoms on tomato plants with blight: Malvern Autumn Show - 22–24 September 2023.
RHS Garden Hyde Hall Flower Show - 2–6 August 2023.RHS Flower Show Tatton Park - 19–23 July 2023.RHS Hampton Court Palace Garden Festival - 4–9 July 2023.
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