The fungus that causes gray mold invades flower bracts that have been damaged by insects, snails or slugs, frost, or other factors. Infected bracts turn brown on the outside. On the inner surface of the bracts the characteristic gray growth of B. cinerea develops.
Solutions
The fungus survives on decaying organic matter. Botrytis rot is most common during rainy weather. Plant in well-drained areas. Remove infected plant parts and protect plant buds from damage caused by invertebrates. When storing chokes, remove infected chokes immediately.
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