Monday, September 15, 2025

The American Iris Society Announces the 2025 Knowlton Medal Winner

  'FROSTY SPIRIT'

The Knowlton Medal is restricted to border bearded (BB) irises. It is named in honor of Harold W. Knowlton (1888-1968) of Auburndale, Massachusetts, a tireless promoter of the border bearded class of irises. Bennett Jones wrote in The World of Irises: "Harold Knowlton was among the first to make deliberate selections of smaller plants. Two of his 1950 introductions, ‘Pearl Cup’ ... and ‘Cricket’... display the desirable features we still seek in modern border irises." Previous awards winners can be found at https://wiki.irises.org/Main/InfoAwards.

Border bearded iris 'Frosty Spirit'
photo by Rick Tasco


'Frosty Spirit' - (Richard Tasco, R. 2017) Seedling 11-BB-01-23. BB, 27" (69 cm), Early midseason bloom. standards very pale light blue, centers lighter, few thin green veins at midrib; style arms very pale light blue; Falls same, lighter centers; beards golden orange 1st half then wisteria blue (RHS 92A); blue slightly darker in cooler weather; moderately ruffled; slight sweet fragrance. Seedling 07-SDB-79-17-HR: (seedling 05-SDB-31-13: (Carmel Celeste x seedling 02-SDB-01-02: (Love Unlimited x 'Yearling')) x seedling 5-SDB-03-18-HR: ('Punk' x seedling 03-SDB-04-02-HR: ('Mesmerizer' x Hager pumila seedling 4471TyY : ('Ceremony' x Hager pumila seedling 2847WFlrPr: (seedling BU68 x 'Atomic Blue'))))) X 'Glacier Point'. Superstition 2017


The World of Irises blog will be posting classification medal winners as soon as the hybridizers are notified. The entire list of winners, including Award of Merit and Honorable Mention, will be published on the AIS website, the AIS Encyclopedia, and later in the AIS Bulletin, IRISES.

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