Dr. Markus Scholler, Director of the Arthur Herbarium at Purdue University has confirmed the first case of daylily rust in Indiana.
Daylily rust is a new disease to the United States.
It was first found in Florida in 2000. Since then, it has spread to several other states including Alabama, California, Connecticut, Georgia, Kansas, Kentucky, Louisiana, Minnesota, Mississippi, Missouri, North Carolina, Ohio, South Carolina, Tennessee, and Texas. These pustules contain orange colored spores that can be rubbed or blown from the leaf surface. As the disease progresses, leaves turn yellow and become dry. This disease is considered a potentially serious threat to daylilies.