Species Iris
Irisruthenica

Synonym:Iris alpina

Synonym:Iris caespitosa

Synonym:Joniris ruthenica

Synonym:Limniris ruthenica

Synonym:Xiphion ruthenicum

Height

Spacing
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

Hardiness
12-15 in. (30-38 cm)

Sun Exposure
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)

Danger
Full Sun

Bloom Color

Foliage
Dark Blue
Medium Blue

Other details

Propagation Methods
Herbaceous
Smooth

Seed Collecting

Soil pH requirements
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Patent Information

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

Bloom Time

Awards (if applicable)

Foliage Color

Bloom Characteristics

Water Requirements

Where to Grow