Species Iris, Black Iris, Velvet Flower-de-Luce, Snake's Head Iris, Widow Iris

Iristuberosa

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Iris (EYE-ris)
Species
tuberosa (too-ber-OH-suh)
Synonym
Hermodactylus tuberosus
Spacing
12-18 in. (30-45 cm)
Hardiness
3-6 in. (7-15 cm)
Sun Exposure
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)
Danger
Full Sun
Bloom Color
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Foliage
Pale Green
Dark Purple/Black
Class
Allow pods to dry on plant; break open to collect seeds
Bloom Time
Other Details
Other details
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Propagation Methods
Herbaceous
Seed Collecting
Soil pH requirements
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow after last frost
Patent Information
Awards (if applicable)
Foliage Color
Bloom Characteristics
Alpines and Rock Gardens
Water Requirements
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

Little Rock, Arkansas(2 reports)

Antioch, California

Felton, California

Sacramento, California

Slidell, Louisiana

Brooklyn, New York

Charlotte, North Carolina

Tangent, Oregon

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Featured Videos

Gardener's Notes:

1
positive
1
neutral
1
negative
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P
Little Rock, AR | March 2012 | negative

It's been invasive in my garden, spreading into many of the areas where my species tulips are planted and last year it somehow jumped the...Read More

S
Sacramento, CA (Zone 9a) | March 2006 | positive

This is one of the first plants to bloom in my yard - ususally in February. An interesting plant - one drawback is that the flower snaps...Read More

B
B
Baa
| August 2001 | neutral

Tuberous perennial from Southern Europe to North Africa via Turkey.

Has long stap like bluish green leaves up to 20 inches...Read More

Featured
Pine weevil
(Brachyderes lusitanicus)
American Coot
(Fulica americana)
Featured
Pine weevil
(Brachyderes lusitanicus)
American Coot
(Fulica americana)