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Intermediate Bearded Iris
Iris 'Delirium'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Delirium
Hybridized by M. Smith
Registered or introduced: 1999
» View all varieties of Iris

Class:

Intermediate Bearded (IB)

Height:

24-36 in. (60-90 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:

Fuchsia (Red-Purple)

Gold (Yellow-Orange)

Cream/Tan

Bloom Time:

Early midseason (EM)

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):

Honorable Mention

Award of Merit

Walther Cup

Hans and Jacob Sass Medal (IB)

Regional

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

,

Bakersfield, California

Sebastopol, California

Boise, Idaho

Cherryvale, Kansas

Durham, Maine

Tupelo, Mississippi

Robertsville, Missouri

Cut Bank, Montana

Shepherd, Montana

Salem, New Jersey

Coshocton, Ohio

Lawton, Oklahoma

Salem, Oregon

Greeneville, Tennessee

Fort Worth, Texas

Portsmouth, Virginia

Vancouver, Washington

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Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Nov 15, 2007, zacattack from Fort Worth, TX (Zone 8a) wrote:

Awesome little plant. Superb grower providing lots of increase. Not typical of intermediate growth habits in hot climates. Usually lucky to keep them alive.

Neutral

On Mar 25, 2006, Joan from Belfield, ND (Zone 4a) wrote:

American Iris Society Awards: Honorable Mention 2003; Walther Cup 2003; Award of Merit 2005; Hans and Jacob Sass Medal 2007