Gummy stem blight/black rot on summer squash
(Didymella bryoniae (sexual stage); Phoma cucurbitacearum)

Extensive black rot infection on spaghetti squash (C. pepo)
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

• Return to Diagnostic Keys for Cucurbit Fruit

• Link to the Factsheet on Gummy Stem Blight/Black Rot of Cucurbits

• Link to Photo Gallery of Gummy Stem Blight/Black Rot of Cucurbits