Newly pollinated flowers are quite susceptible to grey mold infection, and the infection can spread to the fruit. Occasionally gray mold infections on stems will encircle the stem cutting off nutrient flow, causing the top of the tomato plant to die. Beans develop the typical felty gray coloured mold on leaves, stems and pods. The plants may die and wilt prematurely. The first symptom is usually a discoloured water spot.
Gray mold is the most serious and widespread lily disease.
Symptoms include yellowish to reddish brown leaf spots, which in wet weather can grow together leaving the entire leaf blighted. The leaves may also have a oily, drooping appearance. The fungus does not affect the bulb. An important control measure for gray mold is air circulation. Physical impediments to air circulation can increase the incidence and severity of all fungal diseases, and gray mold is no exception.