Final diagnosis


Botrytis cinerea (Grey mould)

On the upper side of the leaves, small discoloured spots may be observed; these turn brown and are surrounded by a light-green to yellow halo <i><b>Botrytis cinerea</i></b> (Grey mould)
An increase in the number of spots, their expansion and subsequent desiccation can rapidly destroy the foliage<i><b>Botrytis cinerea</i></b> (Grey mould)