Click on one of the colored counties to see a regional Powdery Mildew Risk Forecast map.

Fresno and Madera Counties |  Salinas Valley |  Kern and Tulare Counties |  Lake and Mendocino Counties |  Napa County |  Riverside County |  San Joaquin and Merced Counties |  Santa Barbara and San Luis Obispo Counties |  Sonoma County |  Yolo and Sacramento Counties | 

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This information is deemed reliable but is not guaranteed. It should be used in combination with regular field scouting, knowledge of field history and common sense.
Individual field practices such as irrigation may change specific microclimates from field to field.