Zone 5 · Blue-Eyed Grass
Planting Blue-Eyed Grass in Zone 5
Sisyrinchium angustifolium
✅ Blue-Eyed Grass thrives in zone 5 (hardy 4–9)
Can I plant today?
⏳ Too early to direct-sow
Last frost is in 4 weeks. Wait until soil warms.
Evaluated for April 27, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around October 15
Bloom window
May – June
Peak bloom
May
Sun required
full sun, part sun
Mature height
12"
Spacing
9" apart
Type
perennial
How to plant Blue-Eyed Grass in zone 5
Plant in spring in moist, well-drained soil. Actually an iris despite the name; charming small flowers.
Pair with these for continuous bloom
Blue-Eyed Grass peaks in May. These companions keep your bed in color before and after.
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