Definition of false blossom
1 : a disease of the cranberry caused by a fungus (Exobasidium oxycocci) producing erect flower buds which produce malformed flowers that set no fruit or are sometimes replaced by a whorl of leaves or a branch —called also rosebloom
2 : a similar disease of cranberries caused by a virus and transmitted by a leafhopper (Scleroracus vaccinii) —called also Wisconsin false blossom
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