The Story
Plant Bio
Sisyrinchium bellum, commonly known as the blue-eyed grass, is a perennial herbaceous plant known for its attractive blue flowers and grass-like foliage.
This species is notable for its stunning star-shaped blooms that appear in abundance during late spring, adding vibrant color to gardens.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9, 10
Water
Low to moderate
Humidity
Prefers dry to moderate humidity
Lifespan
Perennial
Native To
Western North America
Toxicity
Non-toxic to humans and pets
Bloom period
Late spring – Early summer
In flower about 2 months of the year
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds into moist, well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Water consistently during the growing season for optimal growth.
- Fertilize with a balanced liquid fertilizer monthly in spring and summer.
- Divide clumps every 2-3 years to maintain vigor and prevent overcrowding.
- Mulch around plants to conserve moisture and suppress weeds.
Pro Tip
Plant in full sun for best flowering and ensure well-draining soil to prevent root rot.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 🌱
- Deadhead spent flowers to encourage more blooms
- Apply a layer of mulch to retain soil moisture
Don't
- Avoid overwatering, which can lead to root rot ❌
- Don't disturb the roots during the growing season
- Refrain from fertilizing in late fall
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| 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
Western Blue-eyed Grass questions
What zones can Western Blue-eyed Grass grow in?
Western Blue-eyed Grass is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Western Blue-eyed Grass deer resistant?
Yes — Western Blue-eyed Grass is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Western Blue-eyed Grass bloom?
Western Blue-eyed Grass typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Western Blue-eyed Grass need full sun?
Western Blue-eyed Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Western Blue-eyed Grass drought tolerant?
Yes — once established (usually after the first full season), Western 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'
Blue-eyed Grass
Sisyrinchium brachypus
Narrow-leaved Blue-eyed Grass
Sisyrinchium angustifolium
Puerto Yellow Blue-eyed Grass
Sisyrinchium tinctorium 'Puerto Yellow'
Devon Skies Blue-Eyed Grass
Sisyrinchium x hybrida 'Devon Skies'
Keep exploring
Explore the genus
Grow Western 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.