Helpful Terms

Daylily Dictionary

There are hundreds of words and phrases which have daylily-specific, or botanical explanations. This dictionary provides a living list of terms - most of which have been submitted by members, and the scientific entries are reviewed by our Scientific Studies Committee. (Read the Foreword for the full story behind this Dictionary.) Terms found here are helpful in successfully growing, purchasing, exhibiting and enjoying daylilies. If you have a term for possible inclusion in the Dictionary, please submit it at the bottom of this page.

History of this Dictionary

Tips for Searching the Dictionary:

  • You can type in a term and search, which will find all of the definitions that reference the term. (ex: If you search the word “form”, the dictionary will show you all of the definitions that include the word “form” in the title or in the definition itself.)
  • You can select a letter of the alphabet and click the Search button, and it will show you only the terms that start with the letter you selected.
  • You can scroll through the list of terms, browsing and learning along the way.

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All photos used in the Daylily Dictionary appear at the consent of the photographer. If you would like to re-use these photos, please contact the photographer to obtain permission to do so.

Suggest a Term

Please use this form to suggest a new term or to offer corrections to an existing term:


The American Daylily Society