This plant is said to grow outdoors in the following regions:
Rock Falls, Illinois
Williamsville, Illinois
Carmel, Indiana
Fort Wayne, Indiana
Iowa City, Iowa
Durham, Maine
Robertsville, Missouri
Newfoundland, New Jersey
Kingston, New York
Concord, North Carolina
Allentown, Pennsylvania
Anacortes, Washington
Tacoma, Washington
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From the 1928 Lee R. Bonnewitz Iris and Peony catalog of Van Wert, Ohio:
LENT A. WILLIAMSON (Williamson). One of the very best Iri...Read More
Introduced prior to 1920 when AIS was formed, this iris received it's awards from the both the national societies of France (CM 1924) and...Read More
A tried and true variety I often see in older gardens. Rescued my rhizomes from a bulldozed home site and watched them grow into a health...Read More