I just lost Owyhee Desert (planted this year), all the fans had fallen over and had some brown on them, so I dug it up. The roots were healthy, the rhizome was firm and healthy, yet all the fans came off easily...even on the increases. I gave it a dip (more of a soak) in a diluted bleach bath. Then thought better of it and ended up tossing it into the trash can. I drenched the hole were it was planted with diluted bleach.
I experienced that corky rhizome loss last year too. They were all newly planted rhizomes that were hit, even a tough as nails NoID.
