Pest identification
and confirmation—Gray mold
Tissue infected with the gray mold fungus, Botrytis, is covered with a velvety gray growth when the
fungus begins to produce spores. If the humidity is high, berries become cottony white with fungus mycelium.
Decayed fruit remain fairly firm and contents do not leak. The velvety appearance of decayed tissue and
the absence of liquid leaking from the fruit distinguish gray mold from other fruit rots such as Rhizopus.
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Leaking
of contents caused by Rhizopus
Velvety
appearance of gray mold
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