This fungal disease, also called gray mold, infects leaves, stems, flowers, and bulbs of a number of plants. The fungus often infects dead or dying tissues first, and then spreads into living tissues. Lesions are brown to gray circular spots that later become fuzzy, producing gray masses of fungal spores. Cool, damp weather favors the development and spread of this disease. Prune away and discard diseased plant parts.
Fungicides are available.