Photo by Melody

PlantFiles: Black Flowered Iris
Iris chrysographes 'Black - Flowered'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: chrysographes (kris-oh-GRAF-ees) (Info)
Cultivar: Black - Flowered
Additional cultivar information: (aka Black Beauty, Black Form, Black, Black Knight, Black Velvet (all invalid names in the RHS Horticultural Database)

» View all varieties of Iris

One vendor has this plant for sale.

15 members have or want this plant for trade.

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18-24 in. (45-60 cm)

15-18 in. (38-45 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Parts of plant are poisonous if ingested

Bloom Color:
Dark Purple/Black

Bloom Time:
Midseason (M)


Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer
Flowers are good for cutting

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

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):
Unknown - Tell us

Click thumbnail
to view:

By saya
Thumbnail #1 of Iris chrysographes by saya

By azulivines
Thumbnail #2 of Iris chrysographes by azulivines


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive azulivines On Jul 4, 2010, azulivines from Burnaby, BC (Zone 7b) wrote:

Known as Iris 'Black Form,' this variety of chrysographes iris allures gardeners for its almost-black flowers. Dainty and quite flexible, this iris truly stands out in the gothic black garden. I have not noticed any fragrance, contrary to comments on this iris.

As the flowers are not as large as german iris, this form is used best up-close or in a mass planting. Flowers are in late May-early June.

Neutral saya On Aug 11, 2008, saya from Heerlen
Netherlands (Zone 8b) wrote:

There's only a little information about this Iris. It looks different than the species, it misses the typical yellow markings. According RHS 'black-flowered' is an accepted name. It is often sold as 'Black Form', 'Black', 'Black Velvet', 'Black Knight', 'Black Beauty. These are all synonyms (and also invalid names) for this Iris according RHS.


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


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