The Story
Plant Bio
Bossiaea cinerea, the showy bossiaea, is an erect, densely branched evergreen shrub native to coastal and woodland habitats of southeastern Australia. It features small, triangular, sharply pointed leaves arranged along hairy stems and produces yellow-and-red pea-like flowers from late winter through spring.
The species is distinguished by its rigid, trowel-shaped foliage with pungent tips and prominent reddish-brown stipules at the leaf bases. The solitary flowers emerge from leaf axils on slender pedicels, showing a golden-yellow standard petal backed with deep red.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Shrub
Height
60"
Width
60"
Light
Full Sun, Partial Sun
Zones
9, 10
Water
Low
Humidity
Moderate
Lifespan
Moderate
Native To
Australia
Toxicity
Non-toxic (sharp foliage)
Bloom period
Late winter – Late spring
In flower about 4 months of the year
Planting
How to Grow
- Select a planting site in full sun to partial shade with highly permeable, sandy or gravelly soil.
- Dig a hole twice as wide as the root ball but of equal depth to prevent the crown from settling below the soil line.
- Backfill with native soil without adding organic compost or soil improvers, which can retain too much moisture.
- Water thoroughly immediately after planting, then restrict irrigation to periods of prolonged dryness once established.
Pro Tip
Plant in coarse, sandy, or gravelly soil with rapid drainage; planting in heavy clay or applying standard high-phosphorus garden fertilizers will quickly induce fatal root rot.
Keep It Thriving
Care Guide
Do
- Plant in sharply draining, gritty, or sandy soil mixes.
- Prune lightly after the spring flowering period to maintain a compact, bushy habit.
- Use low-phosphorus, native-formulated fertilizers if supplemental feeding is required.
Don't
- Do not plant in heavy clay or waterlogged soils, which trigger rapid root rot.
- Do not apply standard high-phosphorus garden fertilizers.
- Do not overwater once the root system is established.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Propagate | ||||||||||||
| 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
Showy Bossiaea questions
What zones can Showy Bossiaea grow in?
Showy Bossiaea 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.
When does Showy Bossiaea bloom?
Showy Bossiaea typically blooms in late winter through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Showy Bossiaea need full sun?
Showy Bossiaea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Showy Bossiaea drought tolerant?
Yes — once established (usually after the first full season), Showy Bossiaea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Showy Bossiaea 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.