Collecephalus hemerocalli Remove infected leaves. Destroy leaf debris at the end of the season. Avoid overhead irrigation. Rhizoctonia crown rot Slender, grassy foliage develops and few flower stalks form.
Crowns rot and die.
Rhizoctonia , usually following freeze injury. Protect crowns from freezing. Russet spot Reddish spots form on the leaves. Daylily leaf-streak in Louisiana. Relative susceptibility of about 30 cultivars to leaf streak is noted.