Hi, everyone,
Some modern daylilies do have a stoloniferous trait. About four months after potting up a newly purchased daylily, which I *thought* was Moldovon's "Mutton Jade," I noticed that a fan had appeared 6 inches away from the crown, right at the edge of the pot. This topic came up on the mydaylilies.com forum years ago, too, and a couple other people mentioned having noticed the same trait, both in pots and in the ground.
My story gets a little odd, in that when the daylily bloomed it clearly was *not* "Mutton Jade," so I contacted the seller and sent jpg's and finally it was identified as Moldovan's "Tae Kwon Do" - which in the seller's field was planted a couple feet away from "Mutton Jade." At least the mystery was solved how I came to have the wrong cultivar! : ) (The seller refunded me for the purchase, but unfortunately didn't have enough of "Mutton Jade" to divide that year.)
All the best - Elizabete