-
Dr. Margery Daughtrey will cover the most common and aggravating diseases of dahlia, zinnia, snapdragon and sunflower, giving points on identification and prevention. The diseases featured will include root rots, stem rots, leaf spots and flower blights as well as systemic vascular wilts. You will learn more about Xanthomonas, rust, Septoria, powdery mildew, downy mildew […]