Sisyrinchium angustifolium (Blue-Eyed Grass)

Sisyrinchium angustifolium (Blue-Eyed Grass) is a clump-forming, semi-evergreen perennial noted for its dense tuft of narrow grass-like, light-green leaves and its clusters of delicate, violet-blue, star-shaped flowers, 0.5 in. across (1 cm), adorned with yellow centers.

Sisyrinchium angustifolium (Blue-Eyed Grass) is a clump-forming, semi-evergreen perennial noted for its dense tuft of narrow grass-like, light-green leaves and its clusters of delicate, violet-blue, star-shaped flowers, 0.5 in. across (1 cm), adorned with yellow centers. Borne atop flattened flowering stems, they bloom profusely in late spring and early summer. Blue-Eyed Grass is a terrific plant for accents along paths or walkways, in rockeries or naturalized in cottage gardens.

  • Grows up to 18-24 in. high (45-60 cm) and 6-12 in. wide (15-30 cm).
  • Performs best in full sun or light shade, in medium moisture, well-drained soils. This perennial will decline if allowed to dry out. Protect from excessive winter wet.
  • Ideal addition to borders, city gardens, cottage gardens or rock gardens. Great for edging or as a groundcover.
  • Propagate by division in spring
  • Will freely self-seed under satisfying growing conditions. Shear back after flowering to prevent undesired self-seeding.
  • Benefits from regular division, every 2-3 years, to maintain vigor.
  • Native to North America

Requirements

Hardiness 4
– 11

Heat Zones 5
– 8

Climate Zones 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Sisyrinchium
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)Summer (Early)
Height 1'
– 2'
(30cm
– 60cm)
Spread 6"
– 1'
(15cm
– 30cm)
Spacing 12″ (30cm)
Water Needs Average
Maintenance Average
Soil Type Chalk, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Semi-Evergreen
Native Plants United States, Midwest, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Ohio, Wisconsin, Northeast, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Southeast, Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Southwest, Oklahoma, Texas
Garden Uses Beds and Borders, Edging, Ground Covers, Patio and Containers
Garden Styles City and Courtyard, Gravel and Rock Garden, Informal and Cottage