Photo by Melody

PlantFiles: Intermediate Bearded Iris
Iris 'Agatha Christie'

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Agatha Christie
Hybridized by Sutton; Year of Registration or Introduction: 1996

» View all varieties of Iris

6 members have or want this plant for trade.

Class:
Intermediate Bearded (IB)

Height:
18-24 in. (45-60 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:
Blue-Violet
Silver/Gray

Bloom Time:
Extra early (EE)
Early (E)
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

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By rshadlow
Thumbnail #1 of Iris  by rshadlow

By laurief
Thumbnail #2 of Iris  by laurief

By laurief
Thumbnail #3 of Iris  by laurief

By laurief
Thumbnail #4 of Iris  by laurief

By laurief
Thumbnail #5 of Iris  by laurief

By Wandasflowers
Thumbnail #6 of Iris  by Wandasflowers

By 1913cat
Thumbnail #7 of Iris  by 1913cat

There are a total of 9 photos.
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Profile:

2 positives
1 neutral
No negatives

Gardeners' Notes:

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

American Iris Society Awards: Honorable Mention 2002

Positive laurief On Oct 21, 2005, laurief from Deer River, MN (Zone 3b) wrote:

Most intermediate beardeds (IBs) do quite well in my growing conditions. This northern MN zone 3b climate inflicts severe, extended cold during the winter months, often with little snow cover for insulation. The summer growing season is short with temps that sometimes exceed 90 degrees F. My soil is very heavy, compacted clay with a slightly acid pH, though I grow my irises in well-amended, raised beds or windrows with improved friability and drainage. A large local deer population frequently tramples and sometimes grazes on my irises in early spring and late fall. Iris borers are present but managed successfully with a granular systemic grub control product. Weeds are abundant and only occasionally beaten back by an admittedly lazy gardener (yours truly). Fertilization is inconsistent, when provided at all. Different beds range from full sun to barely 5-6 hrs of sun a day.

AGATHA CHRISTIE is a lovely and reliable bloomer with beautifully proportioned flowers. Increase is average. I highly recommend this cultivar.

Laurie

Positive brimmsplace On Apr 25, 2004, brimmsplace from Murfreesboro, TN wrote:

Has bloomed profusely the last 3 years.

Regional...

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

,
San Jose, California
Boise, Idaho
Cedar Rapids, Iowa
Wichita, Kansas
Deer River, Minnesota
Robertsville, Missouri
Weatherby, Missouri
Shepherd, Montana
Coshocton, Ohio
Murfreesboro, Tennessee



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