Blue Star Flower
Laurentia australis 'Blue Star'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Australia
Toxicity
Sap can cause skin and eye irritation; toxic if ingested.
The Story
Plant Bio
A tender perennial, often grown as an annual, with finely-cut foliage and a profusion of star-shaped, vibrant blue flowers from spring to frost. Notable for its star-shaped flowers and ability to thrive in poor soils.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into moist soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and encourage root growth.
- Plant in well-drained soil with partial sun for optimal growth.
- Water consistently, keeping soil evenly moist during growing season.
- Fertilize monthly with a balanced, water-soluble fertilizer for lush foliage.
- Prune lightly after flowering to promote bushy growth and remove dead stems.
Pro Tip
Use a well-draining soil mix and avoid overwatering to prevent root rot.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 🌱
- Prune after flowering to shape the plant
- Fertilize monthly during the growing season
- Provide partial sun for healthy growth
Don't
- Avoid overwatering to prevent root rot ❌
- Do not expose to full, harsh sun in very hot climates
- Avoid heavy, waterlogged soils
- Refrain from neglecting pruning after flowering
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Plant | ||||||||||||
| Prune |
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
Blue Star Flower questions
What zones can Blue Star Flower grow in?
Blue Star Flower is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Blue Star Flower deer resistant?
Yes — Blue Star Flower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Blue Star Flower bloom?
Blue Star Flower 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 Blue Star Flower need full sun?
Blue Star Flower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
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Grow Blue Star Flower 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.
