This disease, as well as two other bacterial diseases of bean, bacterial brown spot and halo blight, have been occurring rarely in the northeast due to commercial seed now being free of these pathogens. They were important diseases in the past. Information about the three bacterial diseases of bean is at another webpage.
Following photos were taken when common blight was last seen on Long Island, which was before 1988.
Seeds affected by common blight (left) and healthy seeds (right).
