Idaho Blue-eyed Grass
Sisyrinchium idahoense

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Sisyrinchium (sis-ee-RINK-ee-um) (Info)
Species: idahoense (eye-duh-ho-EN-see) (Info)

Category:

Perennials

Height:

6-12 in. (15-30 cm)

Spacing:

9-12 in. (22-30 cm)

Hardiness:

USDA Zone 3b: to -37.2 C (-35 F)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Medium Blue

Bloom Time:

Mid Summer

Foliage:

Herbaceous

Smooth-Textured

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

Seed Collecting:

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

Regional

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

Wilmington, Delaware

Wilkes Barre, Pennsylvania

Bellingham, Washington

Ferndale, Washington

Gardeners' Notes:

0
positives
1
neutral
1
negative
RatingContent
Neutral

On May 4, 2015, CharlysGardenPl from Ferndale, WA (Zone 8a) wrote:

Have seen one in pot for two summers, forgotten and watered infrequently during August, and made it through a few winter freezes (in the pot, mind you). It may die back, but it comes back by May every spring.

Negative

On Aug 8, 2004, shortcm from Wilmington, DE (Zone 7b) wrote:

Invasive in northern Delaware. I planted this 3 years ago, pulled it out 2 years ago, and am STILL pulling babies, even those with only 3 leaves. The tiniest baby grows rapidly into a large clump.. The flowers were very pretty, but very small. Grew in full sun and mostly-shade, dry and wet.