Early Blight
Early Blight Symptoms
Click photo for what causes Early Blight
Disease Name
Early Blight

Scientific Name
Alternaria solani
Leaf spots start as small, dark brown areas, sometimes with a yellow border. Leaf spots grow rapidly under favorable conditions, forming lighter brown bands with a dark center, resembling a bulls-eye. Stem spots have even more noticeable rings than leaf spots and may cause plant death if the stem is girdled. Fruit spots start at or near the stem attachment and also develop a dark, ringed appearance. Spots are leathery-feeling and may be covered by a blackish "dust" consisting of numerous microscopic spores of the fungus. Infected fruit often drops off soon after infection.