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PlantFiles: Standard Dwarf Bearded Iris
Iris 'Dark Crystal'

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Dark Crystal
Hybridized by Byers; Year of Registration or Introduction: 1987

» View all varieties of Iris

4 members have or want this plant for trade.

Class:
Standard Dwarf Bearded (SDB)

Height:
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 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
Sun to Partial Shade

Danger:
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
Purple
Dark Purple/Black

Bloom Time:
Midseason (M)
Reblooming (Re)

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)
Allow cut surface to callous over before planting

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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to view:

By loic
Thumbnail #1 of Iris  by loic

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 Nakihee
Thumbnail #5 of Iris  by Nakihee

By daylily970
Thumbnail #6 of Iris  by daylily970

By Aphthona
Thumbnail #7 of Iris  by Aphthona

There are a total of 8 photos.
Click here to view them all!

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive JenDion On Apr 21, 2011, JenDion from Litchfield, NH (Zone 5b) wrote:

Very vigorous grower. Strong roots, grows taller in better soils, shorter in thinner soils. No pests that I know of. Early bloomer (zn 5).

Neutral Joan On Dec 27, 2005, Joan from Belfield, ND (Zone 4a) wrote:

Awards: American Iris Society Honorable Mention 1992

Regional...

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

Deer River, Minnesota
Harlowton, Montana
Litchfield, New Hampshire
Coshocton, Ohio
Lascassas, Tennessee
Augusta, Wisconsin



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