Tall Bearded Iris 'Flavescens'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Flavescens
Hybridized by De Candolle
Registered or introduced: 1813
» View all varieties of Iris


Tall Bearded (TB)


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

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Pale Yellow

Chartreuse (Yellow-Green)

Bloom Time:

Early (E)



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):

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

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:

Colorado Springs, Colorado

Boise, Idaho

Williamsville, Illinois

Durham, Maine

Brewster, Massachusetts

Ware, Massachusetts

Wayland, Massachusetts

Saint Paul, Minnesota

Harlowton, Montana

Shepherd, Montana

Cobleskill, New York

Concord, North Carolina

Gold Hill, Oregon

Warwick, Rhode Island

Rapid City, South Dakota

Celina, Tennessee

Greeneville, Tennessee

Galax, Virginia

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Gardeners' Notes:


On Dec 15, 2012, themikesmom from Concord, NC wrote:

'Flavescens' De Condolle 1813. It is 27'' tall and has an Early Bloomtime, it is an species iris from Switzerland where it was discovered, and surrounding alpine regions of Austria, France, and northern Italy . According to historical botanists at Thomas Jefferson's Monticello, although it was registered by De Condolle in 1813, this species iris I. flavescens, was first published in literature along with I. pallida in the book 'Florilegium' by Emmanuel Sweert of collected wild species in 1612. It was brought to America in 1854 by Nurseryman: 'William Prince' of New York and appeared in his first book as his most prized iris. This iris is a fast multiplier and looks best in mass plantings. In the rural United States, it is referred to as 'Lemon Yellow Iris' due to its fragrance and also ol... read more