Photo by Melody

PlantFiles: Blue-eyed Grass
Sisyrinchium 'Suwannee'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Sisyrinchium (sis-ee-RINK-ee-um) (Info)
Cultivar: Suwannee

Synonym:Sisyrinchium angustifolium

3 vendors have this plant for sale.

9 members have or want this plant for trade.

Alpines and Rock Gardens

6-12 in. (15-30 cm)

6-9 in. (15-22 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Light Blue

Bloom Time:
Late Spring/Early Summer


Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
Unknown - Tell us

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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive Debndal On Jul 4, 2009, Debndal from Coppell, TX (Zone 8a) wrote:

Started from a 4" pot 3 years ago, it is growing in morning sun, dappled sun to shade rest of the day, and it blooms profusely in late March into April. It has been evergreen in my zone 8 garden. The area is fairly dry as it is missed directly by the sprinkler system. It is spreading but not quickly or invasively. I like the lighter blue flowers on this than the Lucerne - they are much brighter. If you like blue eyed grass, this one is far superior to others I have tried.

Positive wormfood On Mar 26, 2009, wormfood from Lecanto, FL (Zone 9a) wrote:

We just got apiece of this plant last week and I haven't watered it yet. It has 3 flowers that close at night and open again in the morning, cute as a button. I'm planting it in the yard and expecting it to spread.


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

Vincent, Alabama
Hobe Sound, Florida
Lecanto, Florida
Miccosukee Cpo, Florida
Tampa, Florida
Jennings, Louisiana
New Orleans, Louisiana
Croton On Hudson, New York
Greenville, South Carolina
Coppell, Texas
Garland, Texas
Houston, Texas
Seadrift, Texas
Palmyra, Virginia

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