Limestone Blue-Eyed Grass

Sisyrinchium calciphilum

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Iridaceae
Genus:
Sisyrinchium
Species:
Sisyrinchium calciphilum
USDA Symbol:
SICA22

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
30 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun
Bloom Colors:
blue, violet

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes

Soil Requirements

Soil Type:
calcareous, well-drained rocky soil
pH:
7.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
prefers limestone-rich areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Seeds germinate best with cold stratification and exposure to light.

The above propagation data sourced from Claude AI