Margery Daughtrey is a Senior Extension Associate with the Department of Plant Pathology, 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 provides diagnosis and educates growers on management of greenhouse and nursery crop diseases and investigates controls for problems such as powdery mildew, downy mildew, and Pythium and Phytophthora root rot. 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. She serves as the Editor-in-Chief of APS Press. Daughtrey is coauthor of several books, including Diseases of Herbaceous Perennials, published in 2009 by APS PRESS.