Lucerne Blue-eyed Grass
Sisyrinchium angustifolium 'Lucerne'
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Medium; drought tolerant once established
Humidity
Average
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic
The Story
Plant Bio
Sisyrinchium angustifolium 'Lucerne' is a clumping perennial with slender, grass-like foliage and striking blue flowers. Noted for its longer bloom period compared to other cultivars of Sisyrinchium angustifolium.
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds into well-draining soil in early spring for best germination.
- Mist cuttings lightly and keep soil moist during rooting process.
- Transplant seedlings when they have established strong roots, typically after 6 weeks.
- Fertilize with a balanced, water-soluble fertilizer every 4-6 weeks during active growth.
- Divide clumps in early spring or fall to promote healthy growth.
- Mulch around plants to retain moisture and suppress weeds.
Pro Tip
Ensure well-draining soil to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist but not waterlogged 🌱
- Prune dead or damaged leaves to encourage new growth
- Fertilize during active growing season for lush foliage
Don't
- Avoid overwatering, which can cause root rot ❌
- Do not disturb roots during flowering
- Keep away from heavy clay soils that retain excess moisture
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Prune | ||||||||||||
| 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
Lucerne Blue-eyed Grass questions
What zones can Lucerne Blue-eyed Grass grow in?
Lucerne 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 Lucerne Blue-eyed Grass deer resistant?
Yes — Lucerne Blue-eyed Grass is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Lucerne Blue-eyed Grass bloom?
Lucerne Blue-eyed Grass typically blooms in late spring to early summer through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Lucerne Blue-eyed Grass need full sun?
Lucerne Blue-eyed Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Lucerne Blue-eyed Grass drought tolerant?
Yes — once established (usually after the first full season), Lucerne 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
Suwannee Blue-eyed Grass
Sisyrinchium nashii 'Suwannee'
Western Blue-eyed Grass
Sisyrinchium bellum
Yellow Blue-eyed Grass
Sisyrinchium tinctorium 'Puerto Yellow'
Narrow-leaved Blue-eyed Grass
Sisyrinchium angustifolium
Devon Skies Blue-Eyed Grass
Sisyrinchium x hybrida 'Devon Skies'
Blue-eyed Grass
Sisyrinchium brachypus
Keep exploring
Explore the genus
Collections featuring this plant
Grow Lucerne 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.
