Tall Bearded Iris
Iris 'Wintry Sky'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Wintry Sky
Hybridized by Keppel
Registered or introduced: 2002
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Class:

Tall Bearded (TB)

Height:

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

18-24 in. (45-60 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)

Sun Exposure:

Full Sun

Danger:

Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Light Blue

Medium Blue

White/Near White

Bloom Time:

Early midseason (EM)

Foliage:

Herbaceous

Other details:

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):

Honorable Mention

Award of Merit

Regional

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

Phoenix, Arizona

Tucson, Arizona

Monroe, Connecticut

Hebron, Kentucky

Clawson, Michigan

Cut Bank, Montana

Beatrice, Nebraska

Omaha, Nebraska

South Sioux City, Nebraska

Las Cruces, New Mexico

Myrtle Beach, South Carolina

Harker Heights, Texas

Madison, Wisconsin

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Gardeners' Notes:

3
positives
1
neutral
0
negatives
RatingContent
Positive

On Apr 19, 2009, RobertWM from Clawson, MI wrote:

Some California bred iris haven't done well for me; they seem to never adjust to Michigan's climate. And I wasn't really thrilled when I got this as a bonus since I didn't care for the dark tops at the time. My opinion has completely changed. WS took a season to adjust, then took off and has grown steadly. Beautiful clear colors which show up from a long way off in the yard and about the prettiest form of any iris I've seen. A winner.

Positive

On Jul 23, 2008, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

Gorgeous flowers and an excellent grower. My favorite iris.

Won the Wister Medal in 2010.

Positive

On Apr 3, 2006, Margiempv from Oro Valley, AZ (Zone 9a) wrote:

It has good healthy growth habits, great color and it blooms early. One of the first ones to appear in spring.

S. steeplechase blue central area shading to light blue edge, midrib flushed foxglove, F. blue white foxglove shading in throat beside beard; beards cream at end, yellow in throat, with blue base; heavily ruffled.

Crowned Heads X 91-165A: (Spring Shower x Modern Times)

Neutral

On Dec 17, 2005, Joan from Belfield, ND (Zone 4a) wrote:

Awards: American Iris Society Honorable Mention '04; Award of Merit '06; John C. Wister Memorial Medal Runner Up 2009