The Aster Leafhopper (Macrosteles quadrilineatus), can be a concern to anyone growing lettuce, tomatoes, celery, carrots (and other vegetables), endice, parsnip, and many different kinds of flowers [such as coneflowers, daisies, marigolds, zinnias, snapdragons, and chrysanthemums] because it serves as a vector for the mycoplasma-like pathogen known as aster yellows. We do not see aster