The upper leaves of plants infected with tomato spotted wilt virus often develop unusual brown or purple markings that may look like spots or lines. There is no way to treat infected plants, which should be removed from the garden as soon as symptoms develop. This disease can be prevented by planting resistant varieties like 'Crista' and 'Amelia'.
Learn more about recognizing and managing this disease! Read the rest of the story on the Pender Cooperative Extension website: http://pender.ces.ncsu.edu/index.php?page=news&ci=LAWN+130