Narrow-leaved Blue-eyed Grass
Sisyrinchium angustifolium
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
8 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Medium to wet
Humidity
Average
Lifespan
Perennial
Native To
Eastern and Central North America
Toxicity
No known toxicity
The Story
Plant Bio
Sisyrinchium angustifolium, commonly known as narrow-leaved blue-eyed grass, is a perennial herb with slender, grass-like foliage and star-shaped, violet-blue flowers that bloom in spring and early summer. A tough, adaptable perennial that forms dense, grass-like clumps. It readily self-seeds in favorable conditions, making it excellent for naturalizing in meadows, rock gardens, or along pond edges.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring
- Water thoroughly after planting
- Place in full sun for best bloom
- Maintain evenly moist soil during growing season
- Divide every 3-4 years in early spring
- Mulch lightly to retain moisture
Pro Tip
Sow seeds directly into the garden for naturalization and best growth
Keep It Thriving
Care Guide
Do
- Water regularly during dry periods 🌱
- Divide clumps every 3-4 years
- Remove spent flowers to encourage new blooms
- Apply a balanced fertilizer in early spring
Don't
- Avoid overwatering in winter ❌
- Don’t disturb roots during peak flowering
- Refrain from heavy pruning in late fall
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Narrow-leaved Blue-eyed Grass questions
What zones can Narrow-leaved Blue-eyed Grass grow in?
Narrow-leaved Blue-eyed Grass is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Narrow-leaved Blue-eyed Grass deer resistant?
Yes — Narrow-leaved Blue-eyed Grass is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Narrow-leaved Blue-eyed Grass bloom?
Narrow-leaved Blue-eyed Grass typically blooms in late spring to early summer through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Narrow-leaved Blue-eyed Grass need full sun?
Narrow-leaved Blue-eyed Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Narrow-leaved Blue-eyed Grass drought tolerant?
Yes — once established (usually after the first full season), Narrow-leaved Blue-eyed Grass handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Sisyrinchium to compare
Lucerne Blue-eyed Grass
Sisyrinchium angustifolium 'Lucerne'
Suwannee Blue-eyed Grass
Sisyrinchium nashii 'Suwannee'
Western Blue-eyed Grass
Sisyrinchium bellum
Yellow Blue-eyed Grass
Sisyrinchium tinctorium 'Puerto Yellow'
Devon Skies Blue-Eyed Grass
Sisyrinchium x hybrida 'Devon Skies'
Blue-eyed Grass
Sisyrinchium brachypus
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Grow Narrow-leaved Blue-eyed Grass with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
