Data specific to Irises (Edit)
Hybridizer: Williamson
Year Of Registration: introduced prior to registration system
Year Of Introduction (May Differ From Registry): 1918
Classification: Louisiana
Bloom Color Classification: Purple
Fragrance: Pronounced
Sweet

General Plant Information (Edit)
Life cycle: Perennial
Flowers: Showy
Fragrant
Parentage: I. fulva X I. foliosa
Child plants: 14 child plants

Image
Common names
  • Louisiana Iris
  • Iris

Photo Gallery
Location: Daisydo's garden
Date: 2019-05-25
Dorothea K Williamson Louisiana iris

Date: c. 1936
illustration from the 1936 catalog, Robert Wayman, Bayside, NY

Photo courtesy of Iris City Gardens
Location: my 6a Missouri Garden
Date: 2015-05-19
Comments:
  • Posted by scvirginia on Aug 2, 2020 9:06 PM concerning plant:
    Description from Sidney's Conger's 1952 catalog of Louisiana Iris, p.5:
    DOROTHEA K. WILLIAMSON. (Williamson, 1918). The demand for hardiness among the Louisianas grows, and this iris is the criteria [sic] for such a goal. It is hardy wherever iris grow. The flat wine flowers are held on erect stems 30" to 36" in height. Excellent for flower arrangements. $.50
  • Posted by scvirginia on Jun 25, 2020 8:47 PM concerning plant:
    Description from the 1933 catalog, Royal Iris Gardens (J. C. Nicholls, Jr., Camillus, NY), pp.74-75:
    Other American Species
    D. K. Williamson (Williamson 1918). 33". Fulva X Foliosa. A beautiful hybrid of deep velvety blue purple, with large flowers of good shape and very lasting substance. The color, shape of bloom, and stem arrangement are very artistic. It is splendid as a cut flower, a vase of blooms always eliciting much admiration. Its foliage is a beautiful deep green, remaining so throughout the season. Fine for borders.

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