Usually, the fruit is not affected by the fungus. The leaf spots are first seen on older leaves. The spots are circular with gray centers and dark margins and lack a yellow halo. These dark small specks may occur on stems, blossoms or fruit stems. Fruits are seldom infected, however, defoliation of the plants allows the fruits to be susceptible to sunscald.
Late blight is seen as water-soaked patches that turn brown, dry, and papery.
In moist weather, a white mold can be seen on the underside of the leaf. With moderately warm, wet weather conditions, the spread of the infection can be rapid at times. Most of the foliage may become affected and the plants look as though they were damaged by frost. The symptoms can appear on fruit at any stage of growth. Anthracnose mainly affects ripe fruit that eventually rots.