Black Flowered Iris 'Black - Flowered'
Iris chrysographes
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) |

Class:
Height:
18-24 in. (45-60 cm)
Spacing:
15-18 in. (38-45 cm)
Hardiness:
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
Danger:
Parts of plant are poisonous if ingested
Bloom Color:
Dark Purple/Black
Bloom Time:
Midseason (M)
Foliage:
Herbaceous
Smooth
This plant is resistant to deer
Other details:
Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information:
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):
Foliage Color:
Bloom Characteristics:
Flowers are good for cutting
Flowers are fragrant
Water Requirements:
Average Water Needs; Water regularly; do not overwater
Where to Grow:
Gardeners' Notes:
Rating | Content |
---|---|
Positive | 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. |
Neutral | On Aug 11, 2008, saya from Heerlen, 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. |