Tall Bearded Iris 'Night Ruler'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Night Ruler
Hybridized by Schreiner
Registered or introduced: 1990
» View all varieties of Iris


Tall Bearded (TB)


36-48 in. (90-120 cm)


12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

18-24 in. (45-60 cm)


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


Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Dark Purple/Black

Bloom Time:

Midseason (M)



Other details:

Unknown - Tell us

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:


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

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


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

Harrison, Arkansas

Yosemite Lakes, California

Cordele, Georgia

Gainesville, Georgia

Indianapolis, Indiana

Barbourville, Kentucky

Gardiner, Maine

International Falls, Minnesota

Harlowton, Montana

Beatrice, Nebraska

Mahopac, New York

Belfield, North Dakota

Lewis Center, Ohio

North Ridgeville, Ohio

Lawton, Oklahoma

Ponca City, Oklahoma

Keller, Texas

Portsmouth, Virginia

Cathan, Washington

Kalama, Washington

Vancouver, Washington

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Gardeners' Notes:


On Mar 15, 2005, doss from Stanford, CA (Zone 9b) wrote:

(Schreiner, 90) Mid Season 39"
As in the previous note this iris is said to be: "Black, very black. Heavy ruffling dominates this flower, creating lines and shadows on the deep purple coloring. Commonly ten buds on three branches. Excellent growth habits." American Iris Society Honorable Mention '92; Award of Merit '94.
Cooley's Iris Garden note.


On Jun 20, 2003, NellPercy from Ponca City, OK wrote:

Good habit. Darker than the photo shows. Touted as a "black" but isn't quite. Nicely ruffled.
39" S dark purple; F black; B black; ruffled Schreiner 1990