The petioles, flowers, flower stalks, and pods are also streaked. Small round spots appear on the leaves running together gradually until the whole leaf is affected. Leaves may become dark brown or be entirely destroyed. Since this bacteria may be carried on the seed, chemical seed treatments and clean seed are advisable. Leaves are mottled, curled and yellowish.
Flower stalks are short and flowers are streaked with white.
Remove and burn infected plants. Control aphids which spread the disease. Purplish spots on the stems and leaves develop after the leaves are mottled. Discolored or bleached spots may appear on the blossoms. Since the disease is carried by thrips, control the thrips and destroy all infected plants.