The Story
Plant Bio
Dillwynia glaberrima, commonly known as the smooth parrot-pea, is an upright to spreading evergreen Australian shrub with slender, wiry, arching branches. It features small, hairless, needle-like leaves and dense terminal clusters of bright yellow pea-shaped flowers with distinct orange and reddish-brown markings.
This species is distinguished by its completely hairless, rounded leaves that terminate in a short, recurved point. The flowers rely on insect pollination, displaying a prominent standard petal with a contrasting dark throat that guides native pollinators.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Shrub
Height
72"
Width
40"
Light
Full Sun, Partial Sun
Zones
8, 9, 10
Water
Low to moderate
Humidity
Low to moderate
Lifespan
Moderate
Native To
Australia
Toxicity
Non-toxic
Bloom period
Late winter – Early summer
In flower about 5 months of the year
Planting
How to Grow
- Select a planting site with full sun to light afternoon shade and exceptionally sharp drainage.
- Incorporate coarse sand or gravel into the planting zone to ensure water drains rapidly away from the root crown.
- Water sparingly during the establishment phase, then restrict supplemental irrigation to extended dry spells.
- Apply a thin layer of organic mulch, keeping it clear of the main stem to prevent collar rot.
Pro Tip
Plant in highly permeable, sandy or gravelly soil to prevent root rot, and avoid pruning back into old, leafless wood which lacks the capacity to resprout.
Keep It Thriving
Care Guide
Do
- Grow in sandy, acidic to neutral soils that drain rapidly.
- Prune lightly immediately after flowering to maintain a dense, bushy habit.
- Use low-phosphorus fertilizers formulated specifically for native plants if nutrient levels are poor.
Don't
- Do not plant in heavy clay soils or areas prone to standing water.
- Do not cut back into old, bare wood, as the plant will not regenerate from old stems.
- Do not overwater during summer, which promotes soil-borne fungal pathogens.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Propagate | ||||||||||||
| 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
Smooth Parrot-pea questions
What zones can Smooth Parrot-pea grow in?
Smooth Parrot-pea is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Smooth Parrot-pea deer resistant?
Not reliably. Deer may browse Smooth Parrot-pea, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Smooth Parrot-pea bloom?
Smooth Parrot-pea typically blooms in late winter through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Smooth Parrot-pea need full sun?
Smooth Parrot-pea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Smooth Parrot-pea drought tolerant?
Yes — once established (usually after the first full season), Smooth Parrot-pea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Dillwynia to compare
Keep exploring
Explore the genus
Hardy in your zone?
Grow Smooth Parrot-pea 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.