​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 and Verticillium wilt, among others. Cultural, biological and chemical controls will be given. Even some diseases that defy control will be described. In the Q & A time, Margery will be happy to hear stories of growers’ successes and failures at management of particularly gnarly diseases.

Margery Daughtrey is a Senior Extension Associate with the Section of Plant Pathology and Plant-Microbe Biology of Cornell University. She has conducted a research and extension program on the management of diseases of ornamental plants since 1978, at Cornell’s Long Island Horticultural Research and Extension Center in Riverhead, NY. She educates growers on management of greenhouse and nursery crop diseases, runs a diagnostic laboratory and investigates controls for problems such as powdery mildew, impatiens downy mildew and boxwood blight. Daughtrey holds a B.S. degree in Biology from the College of William and Mary and an M.S. in Plant Pathology from the University of Massachusetts, as well as a PhD from Cornell University. She was named a Fellow of APS in 2012. Daughtrey is coauthor of several books, including Diseases of Herbaceous Perennials and the Compendium of Flowering Potted Plant Diseases, as well as the Compendium of Bedding Plant Diseases and Pests.

Zoom instructions will be emailed to ASCFG members prior to the event. All Ask an Expert events are recorded.

Sponsored by: