What does daylily rust look like?
Daylily rust produces a disease whose most characteristic sign is raised orange spots that leave a powdery streak when wiped with a tissue. A sign is a visible evidence of the disease causing organism itself, and the orange spots in this case are masses of fungal spores. Rust also has symptoms, such as yellowing of portions of leaves. Symptoms are visible reactions of the host to the disease causing organism. These symptoms and signs are well illustrated at the Daylily Rust Information Page.
