Gustav was succumbing to crown rot. Dug up the clump, cut and dug out all the rot, soaked in Comet water and potted up. Now have 3 plants that I hope will live. Spideman Daylily in a completely different part of the yard had the same problem. Hope my other Daylilies are safe.
Daylily Gustav Rogul #2 Potting Up
Potted up and dividing into 3.