09/21/2026
I love this site! I am on it all of the time.
The Iris Encyclopedia, also commonly called the Iris Wiki, is a free online reference library devoted to the genus Iris. It is maintained through the American Iris Society (AIS) and is designed for gardeners, iris enthusiasts, hybridizers, researchers, and anyone interested in iris history and identification.
The encyclopedia contains a tremendous amount of iris information, including:
Cultivar information — names, descriptions, classifications, registration information and more
More than 300,000 iris images
80,000+ iris name fact sheets
Parentage and genealogy — see the parents and breeding lines behind cultivars
Hybridizer information
Iris awards and award winners
Historic irises and old catalogs
Cultivation information
Iris classifications such as TB, IB, SDB, MDB, BB, LA, Siberian, Japanese and others
Iris history and literature
Information about iris societies, shows and conventions
If you have an iris in your garden and know its cultivar name, you can search that name and often find photographs, registration information, hybridizer, year of registration, classification and parentage.
For a hybridizer, the parentage information is particularly valuable because you can follow a cultivar's parents and sometimes trace breeding lines through previous generations. The Encyclopedia's stated mission also includes making identification and verification possible through images connected with official descriptions.
Gardeners can also contribute. The Iris Encyclopedia is a wiki, meaning it is continually being developed and updated. The AIS encourages irisarians to contribute photographs, corrections, links and additional information.
One important point for the graphic you've been creating: photos added by gardeners should be correctly identified so that photographs remain useful for cultivar identification and research.
Think of it as an iris research library
A simple way to describe it for your TBIS audience would be:
“The Iris Encyclopedia is like a searchable library for irises—where you can research cultivars, see photographs, learn about hybridizers, trace parentage, explore iris history, and discover information about irises from around the world.”
And it is free to access, making it an excellent resource to recommend to iris gardeners and hybridizers.