Description:A fungal disease causing pale greyish areas on leaves stems and sepals that develops into blister like swellings on the underside of leaves that burst to release dark brown powdery spores. In severe infections, leaves may wither and plant growth is reduced. The original pustule is often surrounded by a ring of later pustules.
Biology:Favoured by moist weather.
Life Cycle:Origin and History:
Management and Control:Remove and destroy infected leaves.
Related and Similar Species:References: