Intermediate Bearded Iris 'Concertina'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Concertina
Hybridized by Sutton
Registered or introduced: 1999
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Intermediate Bearded (IB)


24-36 in. (60-90 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)

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:


Bloom Time:

Early midseason (EM)

Reblooming (Re)



Other details:

Unknown - Tell us

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):

Honorable Mention

Award of Merit

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


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


Redwood City, California

Stanford, California

Boise, Idaho

Macy, Indiana

Iowa City, Iowa

Derby, Kansas

Oskaloosa, Kansas

Anacoco, Louisiana

Hagerstown, Maryland

Deer River, Minnesota

Alton, Missouri

Robertsville, Missouri

Cut Bank, Montana

Shepherd, Montana

Keansburg, New Jersey

Salem, New Jersey

Concord, North Carolina

Coshocton, Ohio

Albany, Oregon

Philadelphia, Pennsylvania

Columbia, South Carolina

Greeneville, Tennessee

Portsmouth, Virginia

The Plains, Virginia

Tomah, Wisconsin

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Gardeners' Notes:


On May 16, 2015, GardenSanctuary from Monmouth County, NJ (Zone 6a) wrote:

Concertina is one tough little Iris, blooms reliably for me in sun or shade and increases quickly. Surprised me this year with a bloom that had 4 standards, falls & beards! Well worth adding this space ager to your garden.


On May 11, 2015, iowhen from Iowa City, IA (Zone 5a) wrote:

Don't let the delicate color fool you. This IB is tough and substantial. The purple horns are unexpected and fun.


On May 11, 2010, joannacay from McLean, VA (Zone 6b) wrote:

This plant increases rapidly and blooms enthusiastically. It was one of the first to bloom in the garden and is still going strong. It has been producing four new fans from each rhizome each year.


On Mar 25, 2006, Joan from Belfield, ND (Zone 4a) wrote:

American Iris Society Awards: Honorable Mention 2002; Award of Merit 2006; Hans and Jacob Sass Medal Runner Up 2009


On Apr 23, 2005, doss from Stanford, CA (Zone 9b) wrote:

This Iris is a very prolific bloomer. Strong stalks, good substance and good bloom size for an intermediate. Reblooms in my zone 9 garden. Highly recommended.