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Tall Bearded Iris 'Decadence'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Decadence
Hybridized by Blyth
Registered or introduced: 2001
» View all varieties of Iris


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)

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Fuchsia (Red-Purple)

Gold (Yellow-Orange)

Bloom Time:

Midseason (M)



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:

Allow pods to dry on plant; break open to collect seeds

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

Walther Cup

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:


Phoenix, Arizona

Bakersfield, California

San Jose, California

Monroe, Connecticut

Gainesville, Georgia

Hebron, Kentucky

Durham, Maine

Revere, Massachusetts

Chelsea, Michigan

Clawson, Michigan

Saint Paul, Minnesota

Robertsville, Missouri

South Sioux City, Nebraska

Salem, New Jersey

Oklahoma City, Oklahoma

Grants Pass, Oregon

Myrtle Beach, South Carolina

Greeneville, Tennessee

Winnsboro, Texas

Pleasant Grove, Utah

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Gardeners' Notes:


On Jun 1, 2013, RobertWM from Clawson, MI wrote:

Decadence is one of the most celebrated iris of the last twenty years or so and for good reason. Big beautiful flowers, strong stalks and great growth. Absolutely nothing not to like.


On Jun 21, 2011, ronkw from Thornhill On,
Canada wrote:

AIS John C. Wister Memorial Medal 2010


On Apr 21, 2009, MikenMyrtle from Myrtle Beach, SC wrote:

I cannot speak for other areas within Zone 8, but here in coastal SC (north coastal), this flower is an excellent grower, very good increaser. The standards in the evening sun have an orange/melonish glow. Looks-wise, Decadence is a real showstopper.


On Jul 17, 2006, Joan from Belfield, ND (Zone 4a) wrote:

American Iris Society Awards: Honorable Mention 2006; Walther Cup 2006, Award of Merit 2008