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Botrytis Disease (Botrytis cinerea)

Damage: Balling of buds and flowers after rainfall, dropping of buds,
rotting buds and flowers, and spotted canes are all symptoms of Botrytis.
Mouse-gray moldy deposit, damping off of yound seedlins and considerable
diminution of flowers and vigor are also signs. This disease is often called
gray mold.

Cause: Plant debris. Favored by high humidity and condensed moisture.
Spores are airborne. Botrytis blight is a fungal disease that generally attacks
dying tissue. It is frequently found on older flowers and other plant parts.
Under certain conditions it may also attack healthy tissue.

Prevention: Make sure you have good air circulation and balanced fertilizer. Suspend nitrogen fertilization and fertilize with potassium. Remove affected plant parts. Fungicide sprays can be used with seedling beds.

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