Gray mold infects flowers during wet weather and results in moldy berries, even before they ripen. Wet weather during fruit ripening also can lead to moldy fruit. Moldy berries are most common in the interior of the canopy where the environment favors disease development.

 

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This is a part of The Berry Diagnostic Tool - a companion to the NRAES Production Guides for Strawberries, Raspberries and Blueberries