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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
Registered or introduced: 1945
» View all varieties of Iris

Class:

Tall Bearded (TB)

Height:

36-48 in. (90-120 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

18-24 in. (45-60 cm)

Hardiness:

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

Danger:

Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Medium Blue

Bloom Time:

Midseason (M)

Foliage:

Herbaceous

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:

Non-patented

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

Regional

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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Gardeners' Notes:

1
positive
3
neutrals
0
negatives
RatingContent
Neutral

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

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

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

Tall & elegant Breeder: Whiting 1945

Neutral

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

Whiting 1945