Photo by Melody

PlantFiles: Tall Bearded Iris
Iris 'Congratulations'

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Congratulations
Hybridized by Keppel; Year of Registration or Introduction: 1982

» View all varieties of Iris

3 members have or want this plant for trade.

Class:
Tall Bearded (TB)

Height:
36-48 in. (90-120 cm)

Spacing:
18-24 in. (45-60 cm)
24-36 in. (60-90 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

Bloom Color:
Blue-Violet
Violet/Lavender

Bloom Time:
Late Midseason (MLa)

Foliage:
Herbaceous

Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

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):
Unknown - Tell us

Click thumbnail
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By Badseed
Thumbnail #1 of Iris  by Badseed

By Crimson
Thumbnail #2 of Iris  by Crimson

By Sue_WA
Thumbnail #3 of Iris  by Sue_WA

By pixie62560
Thumbnail #4 of Iris  by pixie62560

By Wandasflowers
Thumbnail #5 of Iris  by Wandasflowers

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral Crimson On May 31, 2003, Crimson from Clarksville, TN (Zone 6b) wrote:

Sold as a shade of blue, it's not blue, it's a soft lavender color w/purple. Grows well, needs staking against wind when in bloom. Large flowers, multi-blooms. Grew best in full sun, well watered (not sandy) soil.
Plant info that came with this plant:
Height: 38", Space 18-30" apart, moist/fertile soil, Full sun in
North/Part shade in South, Divide every 3-4 years for best blooms.

Regional...

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

Oro Valley, Arizona
, California
South China, Maine
Shepherd, Montana
Auburn, New Hampshire
Belfield, North Dakota
Fruit Hill, Ohio
Saint Martin, Ohio
Greeneville, Tennessee
Palo Pinto, Texas (2 reports)
Seattle, Washington
Madison, Wisconsin
Bessemer Bend, Wyoming



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