Yes, there are two detailed articles in the Daylily Journal written by George Doorakian that describe growing daylilies hydroponically.
Part 2 was in Volume 55, No. 4, pages 406-411 December 2000.
Part 1 was in the previous issue.
If you are a member of the American Hemerocallis Society then you have access to those issues and can download them from the members website.
If not, then contact me through tree mail through this site and I can provide Adobe Reader (pdf) versions of the articles.
