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Downy Mildew in Cucurbits
Lower surface of pumpkin leaf affected by downy mildew lacking the pathogen’s characteristic purplish gray sporulation. Diagnostic spores may form when an affected leaf is placed with damp paper towel in a closed paper for 12-24 hours.


Photos Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University

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Link to the News Article "Update on Managing Downy Mildew in Cucurbits"

Link to the Factsheet on Assorted Foliar Diseases of Cucurbits

Link to Photo Gallery of Assorted Foliar Diseases of Cucurbits