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Perennation of Sclerotium rolfsii var. delphinii in Iowa

B. A. Edmunds and M. L. Gleason

December 2003


The results of this study suggest that S. rolfsii var. delphinii, which causes stalk and petiole rot of herbaceous ornamental perennials, can survive from year to year and poses a perennial threat to susceptible species in northern landscapes. This finding emphasizes the importance of carefully inspecting susceptible planting stock, diligent scouting for disease symptoms, and quarantining symptomatic plants in order to avoid establishment of S. rolfsii var. delphinii.


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