Knowledgebase
White powder on Vines of Grapes #937817
Asked July 03, 2026, 9:14 AM EDT
Anoka County Minnesota
Expert Response
https://mnhardy.umn.edu/frontenac
https://ohioline.osu.edu/factsheet/plpath-fru-37
https://extension.oregonstate.edu/crop-production/wine-grapes/how-deal-vineyard-powdery-mildew-outbreak