Our annual end-of-summer contest is here, come on down to the Dave's Garden County Fair!

American Blue-eyed Grass, Common Blue-eyed Grass

Sisyrinchium montanum

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Sisyrinchium (sis-ee-RINK-ee-um) (Info)
Species: montanum (MON-tah-num) (Info)
Synonym:Sisyrinchium alpestre
Synonym:Sisyrinchium heterocarpum

Category:

Bulbs

Perennials

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

Height:

6-12 in. (15-30 cm)

Spacing:

9-12 in. (22-30 cm)

Hardiness:

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)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Medium Blue

Bloom Time:

Late Spring/Early Summer

Foliage:

Herbaceous

Smooth-Textured

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:

Non-patented

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:

Denver, Colorado

Careywood, Idaho

Watervliet, Michigan

Gardeners' Notes:

2
positives
1
neutral
0
negatives
RatingContent
Neutral

On Jun 10, 2017, DaylilySLP from Dearborn Heights, MI (Zone 6a) wrote:

A grass-like species of plants from the genus Sisyrinchium native to northern North America from Newfoundland west to easternmost Alaska, and south to Pennsylvania in the east, and to New Mexico in the Rocky Mountains.
It is very similar to S. angustifolium, with which it is sometimes combined.

From Wikipedia, the free encyclopedia

Positive

On Nov 27, 2010, hillfarm from Quesnel, BC (Zone 4a) wrote:

Lovely native wildflower of dry hillsides & grasslands in central interior British Columbia. Blooms open in sun & close tightly on cloudy days. Haven't seen it used in gardens around here; plants are slender & quite inconspicuous so I'm thinking it would be lost unless grown in a rockery in a group or colony. I much appreciate it in the wild in early to mid-summer...always seems to be blooming at the same time as the wild roses.

Positive

On Feb 19, 2005, Todd_Boland from St. John's, NL (Zone 5b) wrote:

This is one of the largest-flowering of the 'blue-eyed grass' species; also one of the tallest. I've tried several species and this one so far has not been too invasive (others are quite nasty). Nice in a rockery or planted next to a yellow flowered or yellow foliaged plant.

BACK TO TOP