Tall Bearded Iris 'Supreme Sultan'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Supreme Sultan
Hybridized by Schreiner
Registered or introduced: 1987
» 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:

Scarlet (Dark Red)

Bright Yellow

Bloom Time:

Late Midseason (MLa)



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:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

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:


Placerville, California

Chicago, Illinois

Litchfield, Maine

Pikesville, Maryland

West Springfield, Massachusetts

Blanchard, Michigan

Saint Paul, Minnesota

Robertsville, Missouri

Auburn, New Hampshire

Sandown, New Hampshire

Union, New Jersey

Lake Placid, New York

Lake Toxaway, North Carolina

West Alexandria, Ohio

Lawton, Oklahoma

Oklahoma City, Oklahoma

Albany, Oregon

Celina, Tennessee

Greeneville, Tennessee

Fort Worth, Texas

Mc Lean, Virginia

show all

Gardeners' Notes:


On Dec 14, 2006, CHA from Chicago, IL (Zone 5b) wrote:

Excellent grower.


On Dec 16, 2005, Joan from Belfield, ND (Zone 4a) wrote:

Awards: American Iris Society Honorable Mention '90, Award of Merit '92


On Nov 28, 2005, ADKSpirit from Lake Placid, NY (Zone 4a) wrote:

Supreme Sultan grew well in the garden, this it's first summer. It produced several stems, with 4 or 5 buds per stem. The color held up well in the sun, even on the second day.

Update 2007: One of the most showiest iris. Huge, huge flowers. May need staking in windy, wet weather.