Knowledgebase
Southern blight on hostas #879460
Asked July 30, 2024, 4:35 PM EDT
Stearns County Minnesota
Expert Response
Unless the blight's presence has been confirmed by laboratory analysis, please send samples of affected plants to the University of Minnesota Plant Disease Clinic.
https://pdc.umn.edu/
If samples prove to be positive for blight, ask clinic staff to explain how to deal with it.
The following publication also addresses your question:
https://hort.extension.wisc.edu/articles/southern-blight/