Tall Bearded Iris 'Sugar Blues'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Sugar Blues
Hybridized by Zurbrigg
Registered or introduced: 1984
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Tall Bearded (TB)


24-36 in. (60-90 cm)

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:

Medium Blue

Bloom Time:

Midseason (M)

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):

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are fragrant

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:

Tucson, Arizona

Carmel, Indiana

Cumberland, Maryland

Millersville, Maryland

Revere, Massachusetts

Vassar, Michigan

Deer River, Minnesota

Los Alamos, New Mexico

Lawton, Oklahoma

Beaver Falls, Pennsylvania

Sarver, Pennsylvania

Conway, South Carolina

Greeneville, Tennessee

Crockett, Texas

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Gardeners' Notes:


On May 5, 2010, joannacay from McLean, VA (Zone 6b) wrote:

This iris sparkles in the sunlight, and the wonderful fragrance extends for some distance around the plant.


On Aug 22, 2008, Igrowinpa from Beaver Falls, PA (Zone 6a) wrote:

Sugar Blues is a gorgeous plant with a heavenly fragrance. In my zone, it is also a rebloomer. There has been no one that has visited my house when it blooms that has not made comments about it. I can highly recommend it!


On May 22, 2008, pajaritomt from Los Alamos, NM (Zone 5a) wrote:

Sugar Blues is a good grower for me and has a heavenly fragrance. It hasn't rebloomed yet, but almost nothing reblooms in the mountains of New Mexico.
October 10, 2008 -- Sugar Blues rebloomed for me. It is very welcome right now just a few days before our first freeze.