ORONO, Maine – The recent cool, wet conditions in Maine may delay the state’s blueberry crop for about a week, according to David Yarborough, University of Maine Cooperative Extension’s blueberry specialist and UMaine professor of horticulture. Yarborough says the wet and windy conditions of May have increased the incidence of mummyberry disease and made it read more Cool Temperatures, Wet Weather Affecting Blueberry Crop