Sisyrinchium Species, Stout Blue-Eyed Grass

Sisyrinchium angustifolium

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Sisyrinchium (sis-ee-RINK-ee-um) (Info)
Species: angustifolium (an-gus-tee-FOH-lee-um) (Info)
Synonym:Sisyrinchium bermudiana
Synonym:Sisyrinchium graminoides
Synonym:Sisyrinchium gramineum
Synonym:Sisyrinchium bermudianum
View this plant in a garden



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Sun to Partial Shade


Grown for foliage


Foliage Color:

Unknown - Tell us


12-18 in. (30-45 cm)


9-12 in. (22-30 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)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:

Dark Blue

White/Near White

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Spring

Other details:

Unknown - Tell us

Soil pH requirements:

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)

From seed; direct sow outdoors in fall

Seed Collecting:

Bag seedheads to capture ripening seed

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

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored


This plant is said to grow outdoors in the following regions:

Tuskegee, Alabama

Vincent, Alabama

Fayetteville, Arkansas

Morrilton, Arkansas

San Leandro, California

Jacksonville, Florida

Keystone Heights, Florida

Lady Lake, Florida

Merritt Island, Florida

Miami, Florida

New Smyrna Beach, Florida

Valparaiso, Florida

Cornelia, Georgia

Statesboro, Georgia

Statham, Georgia

Cherry Valley, Illinois

Chicago, Illinois

Mount Prospect, Illinois

Petersburg, Indiana

Barbourville, Kentucky

Bellevue, Kentucky

Melbourne, Kentucky

Lisbon, Maine

Ijamsville, Maryland

Laurel, Maryland

Oakland, Maryland

Brockton, Massachusetts

Royal Oak, Michigan

Minneapolis, Minnesota

Piedmont, Missouri

Bigfork, Montana

Bayville, New Jersey

Frenchtown, New Jersey

Middletown, New Jersey

New Hyde Park, New York

Sag Harbor, New York

Burlington, North Carolina

Greensboro, North Carolina

Raleigh, North Carolina

Thomasville, North Carolina

Glouster, Ohio

Tulsa, Oklahoma

Mc Kean, Pennsylvania

Millersburg, Pennsylvania

Smokerun, Pennsylvania

Wilkes Barre, Pennsylvania(2 reports)

Columbia, South Carolina

Conway, South Carolina

Sumter, South Carolina

Brighton, Tennessee

Christiana, Tennessee

Clarksville, Tennessee

Austin, Texas

Hutto, Texas

Round Rock, Texas

Uvalde, Texas

Lexington, Virginia

Kalama, Washington

Port Townsend, Washington(2 reports)

Vancouver, Washington

Racine, Wisconsin

show all

Gardeners' Notes:


On Jan 23, 2016, JBtheExplorer from Southeast, WI wrote:

I bought this plant last year after seeing some of a different variety in a prairie. This is a phenomenal little plant. It's in the Iris family. It's very small but that's offset by how showy its blue-purple flowers are. It seems to do well in average soil as well as in wet soil. As the seed pods dried, I was able to collect quite a few seeds from it last year and I hope to have more growing this Spring. If you have a native garden in the United States, this is a brilliant little plant to consider.


On Jun 2, 2015, janelp_lee from Toronto, ON (Zone 6a) wrote:

Very easy to grow and propagate by dividing the plant clumps. Here in Toronto, Ontario they remain evergreen through winter just reduce the volume. Excellent for small pot, rock garden or any size of garden.


On Dec 5, 2011, Vertrees from Gatineau, Quebec,
Canada wrote:

The most beautiful of all the cultivars of Sisyrinchium is the little
spritely Golden-eyed grass ( Sisyrinchium californicum).

It makes a gorgeous accent or companion plant for a bonsai when it is grown in a tiny shallow pot.


On Dec 5, 2011, amygirl from Lafayette, IN (Zone 5a) wrote:

This species is actually native to south Florida. It is found in moist sunny locations within Everglades National Park, including the portion south of Florida City. I've seen it growing in the Long Pine Key area within ENP. I did not realize this species had such a wide native range....up north!


On Jul 19, 2011, Gabrielle from (Zone 5a) wrote:

Grows in tough areas and self-seeds freely. Cute little flowers when in bloom, kind of plain the rest of the time. Blooms May-June in my garden.


On Apr 10, 2011, beachwalker520 from New Smyrna Beach, FL wrote:

This low maintenance plant will do well in full sun or morning sun in my area. When this is in bloom it makes me think of perky happy little faces .
The daily visiting sand hill cranes love to grab these plants by the dying brown blades and pull the plants out so remove old blades as soon as you can.
I bought the plants at a local garden center and was given the impression they multiplied by mounding. When I discovered new plants popping up around the pond in our common area I researched and saw they can scatter their seeds. Some of ours went over 250 feet.


On Jan 27, 2009, StolenMoments from Petersburg, IN wrote:

Lol... well I bought mine at Lowes... (maybe I should look my yard over this spring!) I loved it and it is so dainty and pretty in front of my mixed border. I have large rocks and it is a great fill around them. I divided with no problems and now have several starts off one 4 inch pot. Excellent in Indiana, mine is in part shade and doing well (even though it says full sun)


On May 21, 2008, VwestTN from Brighton, TN wrote:

I discovered this wonderful little jewel growing wild in the yard. I carefully collected and replanted en masse. My husband thought I had lost my mind, but now admits it is eye-catching when in bloom. 8-)

Brighton, TN

Note: A couple of "clumps" are turning black. Has anyone seen this plant do this before? If so, did it die or regenerate. Thanks


On Mar 16, 2008, crimsontsavo from Crossville, TN (Zone 7a) wrote:

An absolutely great plant. Makes a great smaller border grass for beds, or planted en mass.


On May 5, 2007, chicochi3 from Fayetteville, AR (Zone 6b) wrote:

They grow wild here and they are quite attractive. They do need a partial shade in this area. When not in bloom, the plants strongly resemble grass.


On Oct 13, 2006, carrieebryan from Midland, WA (Zone 8a) wrote:

I found Sisyrinchium angustifolium growing wild in my lawn in New Jersey.


On Apr 7, 2006, sheilalarry from Punta Gorda, FL wrote:

I bought some of these and have moved them around in my yard to find a spot where they would do well. They are now shaded by the house until late afternoon and thriving, with very little water needed. I also see some growing wild in some of the more neglected lawns in town here. Very pretty.


On Dec 10, 2004, MotherNature4 from Bartow, FL (Zone 9a) wrote:

These little beauties benefit from occasional mowing, otherwise they would be lost and shaded out. I find them growing in wet areas as far south as zone 10 in Florida.


On Dec 9, 2004, CaptMicha from Brookeville, MD (Zone 7a) wrote:

I happened upon a bunch growing in the shade in a moist area of the yard.

They flower early in the spring and the flowers last a while.

These are easily mistaken for grass so be careful with mowing.


On Apr 26, 2002, lupinelover from Grove City, OH (Zone 6a) wrote:

Plant grows well in shade; just a lessening of flowering. Leaves are evergreen, grass-like glaucous green. Great foliage effect for shade gardens.