Description:A fungal disease that causes grey spots of powdery growth on leaves, shoots, flowers and berries. Dark web like markings can often be seen when the powdery coating is rubbed off. Infection of young leaves may lead to distortion and shrivelling. Fruit may split and dark varieties may have uneven colouring.
Biology:Favoured by warm humid wether in spring and summer.
Life Cycle:Origin and History:
Related and Similar Species:References: