By Seanna Annis, Ph.D., Extension Professor and Professor of Mycology, University of Maine; and Leala Machesney, Wild Blueberry Extension and Research Professional, University of Maine For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Introduction Image 1. The “bull’s eye” characteristic of VLS on the underside