Photo by Melody

PlantFiles: Tall Bearded Iris
Iris 'Blue Rhythm'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Blue Rhythm
Hybridized by Whiting; Year of Registration or Introduction: 1945

» View all varieties of Iris

One vendor has this plant for sale.

9 members have or want this plant for trade.

Tall Bearded (TB)

36-48 in. (90-120 cm)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Medium Blue

Bloom Time:
Midseason (M)


Other details:
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Awards (if applicable):
Dykes Memorial Medal

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to view:

By Conquered_MS
Thumbnail #1 of Iris  by Conquered_MS

By PaintedAcres
Thumbnail #2 of Iris  by PaintedAcres

By sjlfinne
Thumbnail #3 of Iris  by sjlfinne

By 500Greenthumb
Thumbnail #4 of Iris  by 500Greenthumb

By jfrizzell
Thumbnail #5 of Iris  by jfrizzell

By Wandasflowers
Thumbnail #6 of Iris  by Wandasflowers

Thumbnail #7 of Iris  by CHA

There are a total of 14 photos.
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1 positive
3 neutrals
No negatives

Gardeners' Notes:

Neutral Mainer On Sep 5, 2007, Mainer from Durham, ME (Zone 3a) wrote:

Bloomed fine but then died. It was only one small rhizome obtained last year so judging it harshly is too soon I feel. Will most likely try again.

Neutral Joan On Dec 26, 2005, Joan from Belfield, ND (Zone 4a) wrote:

This offspring of 'Great Lakes' is the winner of the 1950 Dykes Medal.

Positive Wandasflowers On Sep 21, 2005, Wandasflowers from Cedar Rapids, IA (Zone 5a) wrote:

Tall & elegant Breeder: Whiting 1945

Neutral carolann On Jun 15, 2003, carolann from Auburn, NH wrote:

Whiting 1945


This plant has been said to grow in the following regions:

Chicago, Illinois
Cedar Rapids, Iowa
Iowa City, Iowa
Preston, Maryland
Deer River, Minnesota
Weatherby, Missouri
South Sioux City, Nebraska
Auburn, New Hampshire
Concord, North Carolina
Celina, Tennessee
Bryan, Texas

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