- The American Hemerocallis Society
- Site of an international daylily society presents membership information, garden displays, publications, a glossary, and many more.
- Bay Area Daylily Society
- Information on the Society's meetings and events with articles on daylily growing, local growers, and member gardens.
- Hoosier Daylily Society, Inc.
- Presents the advocacy of Hoosier Daylily, a group founded for the study and enjoyment of Hemerocallis or the daylily.
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