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PlantFiles: Tall Bearded Iris
Iris 'Amas'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Amas
Hybridized by Coll. by Foster, M., Sir; Year of Registration or Introduction: 1885

» View all varieties of Iris

10 members have or want this plant for trade.

Tall Bearded (TB)

24-36 in. (60-90 cm)
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:
Medium Blue

Bloom Time:
Late Midseason (MLa)


Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

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):
High Commendation

Click thumbnail
to view:

By carolann
Thumbnail #1 of Iris  by carolann

By Wandasflowers
Thumbnail #2 of Iris  by Wandasflowers

By Wandasflowers
Thumbnail #3 of Iris  by Wandasflowers

Thumbnail #4 of Iris  by TBGDN

By greenorchid
Thumbnail #5 of Iris  by greenorchid

By irislover10
Thumbnail #6 of Iris  by irislover10

By themikesmom
Thumbnail #7 of Iris  by themikesmom

There are a total of 11 photos.
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2 positives
3 neutrals
No negatives

Gardeners' Notes:

Neutral estrail1rider On Dec 18, 2010, estrail1rider from Melfa, VA (Zone 8a) wrote:

Foster, collected 1885

Positive themikeman On Jul 18, 2010, themikeman from Concord, NC (Zone 7a) wrote:

i moved into an old brick rural NC farm house and these were here alongside some violet iris pallida..these amas were apparently planted here by an elderly women back in the late 1950's. they arent as tall as the pallida 'violet sweet iris' but very beautiful contrast and also an even older heirloom iris variety too..just beautiful...mike

Neutral Margiempv On Jul 6, 2008, Margiempv from Oro Valley, AZ (Zone 9a) wrote:

Amas is of Asiatic early blooming Germanica Tall Bearded.

Other names it is has been known by are: Amasia, Amos, Artindale, Macrantha, William Tell, and William III. First mentioned in 1885 - being called Amasia at that time.

Positive Mainecoon On May 26, 2005, Mainecoon from Shepherd, MT wrote:

Amas is a very hardy plant

Neutral carolann On Jun 15, 2003, carolann from Auburn, NH wrote:

Collected in Turkey in the mid-1800s; (some sources indicate it by Foster and pinpoint the year as 1885); a tetraploid used extensively in Iris breeding.


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

, (2 reports)
Clanton, Alabama
Macy, Indiana
Cedar Rapids, Iowa
Durham, Maine
Gladwin, Michigan
Harlowton, Montana
Auburn, New Hampshire
Concord, North Carolina
Little Suamico, Wisconsin

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