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16245 S US Hwy 71
Belton, MO 64012
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Sisyrinchium angustifolium

Blue-Eyed Grass

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Sisyrinchium angustifolium (Blue-Eyed Grass)

Blue-Eyed Grass is a primitive iris that can easily be mistaken for a clump of grass if not for the yellow-centered, bright blue, almost daisy-like flowers that are present May through July.

It is native to midwestern & eastern North America. The plant grows in tight clumps eight to ten inches tall in the garden, though it can be quite a bit taller in the wild.

Additional Information:

8-10 Inches


12-15 Inches


Bloom/Seasonal Color

USDA Hardiness Zone 5-9

Home Owner Growing and Maintenance Tips:
The plant will naturalize in a garden, as it is inclined to self-seed & colonize any sunny location. Spreading clumps can be divided in early spring. It thrives in poor soil, but might appreciate a boost from a slow-release, granular organic fertilizer. Though generally grown in dry, sun-gardens, it prefers a bit of spring and early summer watering to bloom its best, though soil should drain extremely well.

Good Companions
Northern Sea Oats (Chasmanthium latifolium), Bottle Gentian (Gentiana andrewsii), Wild Geranium (Geranium maculatum)

Characteristics & Attributes

Hydrologic Designation




Season of Interest

Mid (May-June)

Soil Moisture


Special Uses

Ground Cover

Sun Exposure

Full Sun

USFS MO Ecological Map