I found this old thread very interesting, (I have 'Purple Rain Dance) so I will watch it closely. I also have noticed several other daylilies (currently not sure of the names) that are sending out runners and forming plants some distance away. So I wanted to bring attention back to this because of a recent post.
1. I would like to know of any other named varieties that form plants from "runners", "rhizomes", or "stolons"?
2. Can just a piece of a "runner", "rhizome", or "stolon" grow a new plant.
I have personally dug up daylilies that were known to have "runner" type "roots" and had several plants pop up later in that area. So I am thinking that no part of a crown is necessary for this to happen.
