See:
Greenhouse Plants, Ornamental - Gray Mold
Notes Botrytis fungi colonize dead, dying, and wounded plant parts. From these infections they can attack healthy tissues. A moist, humid environment is ideal for disease development. It is found everywhere that plants are grown and has a wide host range wide host range. Blossom blight, leaf spots, bud and stem rots are common. In humid conditions, a brown to gray fuzzy fungal growth appears on the infected plant part. Leaf blights can start when infected floral tissue falls on healthy leaves. An integrated strategy combining environmental management, cultural practices, and fungicides will most effectively manage this disease.