Blue Eyed Grass, Nash's

Nash's Blue-Eyed Grass (Sisyrinchium nashii)

Nash's Blue-Eyed Grass is a small native perennial in the iris family—not a true grass—with narrow, grasslike foliage and brilliant blue-violet flowers centered by a contrasting yellow eye. Native primarily to the southeastern United States, it fits naturally into sunny, open habitats and works beautifully as a fine-textured component of native meadows, pollinator gardens, rock gardens, and the edges of larger perennial plantings. Its modest scale is particularly useful for filling the low herbaceous layer beneath taller wildflowers without creating a heavy canopy.

Key Characteristics

A miniature iris disguised as a grass
The slender foliage gives Nash's Blue-Eyed Grass the appearance of a small bunchgrass until flowering begins. Then vivid six-parted blue-violet flowers reveal its relationship to irises. This contrast makes it particularly effective scattered among true grasses and sedges, where its flowers seem to emerge unexpectedly from the meadow matrix.

Small flowers designed for small native pollinators
The open flowers expose their pollen where small bees can reach it easily. Blue-eyed grasses are visited by native bees, including small pollen-gathering species that are easily overlooked beside larger bumble bees. Repeating plants in loose groups makes the relatively small flowers easier for both pollinators and people to discover.

Builds detail into the lowest meadow layer
Many meadow designs concentrate on plants two to five feet tall and leave little happening close to the soil. Nash's Blue-Eyed Grass helps fill that missing layer, threading narrow foliage and spring flowers between larger perennials. Combine it with low native grasses, sedges, violets, pussytoes, coreopsis, and other small-scale wildflowers to create a more complex planting rather than a collection of isolated specimens.

Best where taller neighbors don't overwhelm it
Its small stature means placement matters. Use it along meadow edges, paths, openings between bunchgrasses, rock gardens, and toward the front of pollinator borders where taller vegetation will not completely shade it. Avoid overly fertile soil and aggressive neighbors that can quickly overtop the foliage.

Allow some seed for a naturally evolving planting
Rather than removing every finished flower stem, allow some capsules to mature and scatter seed. Seedlings can gradually establish among neighboring grasses and wildflowers, producing the loose, irregular distribution that makes naturalistic plantings convincing. This is particularly useful when developing meadow edges and other matrix-style plant communities.

Product Details

• Native range: Southeastern United States, particularly Florida and portions of the southeastern Coastal Plain
• Plant life cycle: Herbaceous perennial
• Sun requirements: Full sun to partial shade
• Soil requirements: Medium-dry to medium; prefers well-drained soil
• Mature height: Approximately 6–18 inches
• Bloom time: March–May
• Bloom color: Blue to violet-blue with a yellow center
• USDA Hardiness zones: Approximately 7–10

Plant Nash's Blue-Eyed Grass where its small scale can remain visible, using several plants together or repeating them through a low meadow matrix. Good drainage, moderate fertility, and plenty of light help prevent taller vegetation from overwhelming it. Allowing some seed to mature can gradually produce the scattered colonies that look especially natural among grasses, sedges, and other low native wildflowers.