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Tall Bearded Iris 'Silverado'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Silverado
Hybridized by Schreiner
Registered or introduced: 1986
» 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:

Light Blue

White/Near White

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)

Allow cut surface to callous over before planting

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

Dykes Memorial Medal

John C. Wister Memorial Medal (TB)

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

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:

Tucson, Arizona

Brea, California

Boise, Idaho

Eastport, Idaho

Niles, Illinois

Macy, Indiana

Cedar Rapids, Iowa

Barbourville, Kentucky

Anacoco, Louisiana

Preston, Maryland

Belleville, Michigan

Blanchard, Michigan

Deer River, Minnesota

Hopkins, Minnesota

Robertsville, Missouri

Beatrice, Nebraska

Las Vegas, Nevada

Auburn, New Hampshire

Los Alamos, New Mexico

Lawton, Oklahoma

Grants Pass, Oregon

Conway, South Carolina

Greeneville, Tennessee

Dallas, Texas

Lubbock, Texas

Pleasant Grove, Utah

Portsmouth, Virginia

Cathan, Washington

Selah, Washington

show all

Gardeners' Notes:


On May 3, 2012, Irissimo from London/Kent
United Kingdom wrote:

Thanks to the glowing reports on this website ,which I find very useful; I ordered Silverado from a British nursery .Everything about it(particularly colour and shape ) ticks the right boxes for me .So let's see how it does in my cool damp London /Kent garden . You know that you are really hooked on Iris when you'd rather plant them than go out !


On Jun 6, 2011, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

Absolutely fabulous. I was somehow fortunate enough to accidentally select this variety as my first bearded iris. It is tall, stately, hardy, and nothing short of stunning. The flowers are very large and this year each stalk has at least 10 blooms. I now have four other iris varieties, but this one dwarfs and outshines them all.


On May 29, 2010, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

Beautiful, good growing iris.


On Feb 18, 2006, TBGDN from (Zone 5a) wrote:

This is (in my opinion) probably Schreiners crowning achievement in irises. Not to diminish any of their other accomplishments in iris hybridizing, this one has all the great qualities and beautiful good looks every iris collector waits for. If I had to give up all the irises I grow except for ten, this one would be first of them to stay! If form, balance, color, growth, bloom habits, increase and winter hardiness are all taken into consideration, this one will be hard to beat! An outstanding iris!


On Mar 22, 2005, doss from Stanford, CA (Zone 9b) wrote:

'Silverado' has an Early to Mid season bloom. 38"

This highly recognized Iris has won every award the American Iris Society gives to Tall Bearded Iris. 'Silverado' won the Highly Commended '86; Honorable Mention '89; Award of Merit '91; Wister Medal '93;
Dykes Medal '94.

In order to win the Dykes Medal, the Iris must have won every other award, except the Highly Commended. Only recently has the Wister Medal - the highest award for the Tall Bearded Iris - been required for the Dykes Medal. I doubt that this was the case in 1994.


On Jan 20, 2004, Nancymo from Marble Hill, MO wrote:

This iris would be in my favorite top 10! Performs very well here.


On Dec 18, 2003, mountaineer from Manhattan, KS wrote:

This is a outstanding Iris. I could not believe the number of blooms it has. Each stock has 7 or 8 with lots of stocks. It is absolutely gorgeous when it blooms mid season in zone 5.