Gray Mold (Botrytis): Fuzzy Gray Spots on Leaves and Flowers

Identification

Botrytis appears as round brown/gray spots that develop into fuzzy gray spore masses. Attacks leaves, flowers, stems, rhizomes.

Prevention

• Remove dead/dying tissue promptly.
• Keep water off foliage.
• Improve air circulation.

Treatment

• Trim infected areas.
• Remove moldy soil.
• Spray with commercial fungicide.
• Homemade: 1–2 tbsp baking soda + 1–2 tsp mineral oil per quart water. Shake and spray all surfaces.

Common Targets

Cyclamen, begonias, African violets, lilies, geraniums.