Tall Bearded Iris
Iris 'Obsidian'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Obsidian
Hybridized by M. Smith
Registered or introduced: 2001
» View all varieties of Iris

Class:

Tall Bearded (TB)

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

Bloom Color:

Dark Purple/Black

Bloom Time:

Midseason (M)

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:

Macy, Indiana

Cherryvale, Kansas

South Paris, Maine

Shepherd, Montana

Los Alamos, New Mexico

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Aug 24, 2009, pajaritomt from Los Alamos, NM (Zone 5a) wrote:

This iris bloomed the first year I had it in my garden, producing the darkest, most velvety, most alluring of the blacks I have so far, and I have quite a few. This may be my favorite black. Whereas, All Night Long is beautifully waxy, this one is beautifully velvety. Both are stunning.

Neutral

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

American Iris Society Awards: Honorable Mention 2004; Award of Merit 2006