Both indoor and outdoor grapes suffer from fungal diseases which affect the leaves and fruit. The three top grape diseases are downy mildew, powdery mildew, and grey mould. Four grapevine viruses have also recently been detected in the U.K. but are not currently known to be widespread.
Scientific name Plasmopara viticola, Erysiphe necator and Botrytis cinerea
Plants affected Grapevines
Main causes Fungus or fungus-like organism
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.