Grey mould
) is a commonly found fungus in many environments. It survives in plant parts like bulbs and crop residues or as sclerotia (drought- and cold-resistant [...] larger grey-brown lesions. The symptoms on fruits, flowers and on various parts of potted plants often only become visible during and after cold storage [...] In lettuce, grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death