Tall Bearded Iris 'Germanica'

Iris germanica

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Species: germanica (jer-MAN-ih-kuh) (Info)
Cultivar: Germanica
Additional cultivar information:(aka Grandmother's Blue Flag)
» View all varieties of Iris


Tall Bearded (TB)


18-24 in. (45-60 cm)

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

Sun to Partial Shade


Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:




Bloom Time:

Early (E)

Early midseason (EM)



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:

Allow pods to dry on plant; break open to collect seeds

Awards (if applicable):

Unknown - Tell us

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:

Suitable for growing in containers


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

Harlowton, Montana

Jersey City, New Jersey

Concord, North Carolina

San Antonio, Texas

Gardeners' Notes:


On Mar 5, 2014, TexasDollie from Dewey, AZ (Zone 7a) wrote:

Growing this in south-central TX right now...lovely iris, not strongly scented, and at least with the ones I'm growing, the flowers are not very large compared to the Dauntless that bloomed nearby.


On Sep 1, 2011, themikesmom wrote:

This is the the domesticated version 'Germanica' which was derived from the Wild Iris germanica, which can be found at http://davesgarden.com/guides/pf/go/189284/. The wild form which was taken by Linneus and introduced to the general public in 1753 has over the last two centuries been bred with a neglecta and since has become much taller than the wild iris germanica of Linneus's originally description of 21" inches in height in it's now domesticated taller form germanica vulgaris. the wild shorter form is so identical to the iris 'Dorothea' by Caparne 1901 http://davesgarden.com/guides/pf/go/113863/, which I understand is an improved version... read more