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Border Bearded Iris 'Orinoco Flow'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Orinoco Flow
Hybridized by Bartlett
Registered or introduced: 1989
» View all varieties of Iris


Border Bearded (BB)


24-36 in. (60-90 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

Bloom Color:


White/Near White

Bloom Time:

Early midseason (EM)

Midseason (M)

Late Midseason (MLa)

Late (La)



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):

Award of Merit

Dykes Memorial Medal

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

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:

Sherwood, Arkansas

Bakersfield, California

Belleville, Michigan

Deer River, Minnesota

Coshocton, Ohio

Albany, Oregon

Weston, Oregon

Greeneville, Tennessee

Thompsons Station, Tennessee

Madison, Wisconsin

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Gardeners' Notes:


On May 7, 2015, lzyjo from Thompsons Station, TN (Zone 7a) wrote:

Ou! Orinoco Flow is a delightful border bearded of special interest to all Enya fans! Plants are about 21 inches tall at the time of flowering and are quite adorable! Lovely lavender plicata, but my favorite part is that if you look really close, you'll see that the beards go from purple to golden-yellow. Flowered spring after planting, so I believe it's quite a vigorous yet diminutive grower.


On Jul 21, 2008, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

Beautiful iris, but I just couldn't get it to grow.