Essentials
At a Glance
Plant Type
Shrub
Height
120 inches
Width
60 inches
Light
Full Sun, Partial Sun
Zones
9
Water
Low to moderate
Humidity
Average
Lifespan
Perennial
Native To
South Africa
Toxicity
Contains compounds that may cause skin irritation with sun exposure
The Story
Plant Bio
Psoralea pinnata is a large shrub or small tree known for its attractive purple flowers and fragrant foliage. Notable for its drought tolerance and ability to fix nitrogen in the soil, enhancing its surrounding environment.
Bloom Period:
Uses & Benefits:
Planting
How to Grow
- Tuck seeds into well-draining soil in early spring for best germination.
- Water regularly to keep soil moist but not waterlogged during establishment.
- Provide full sun to promote healthy growth and flowering.
- Apply a balanced fertilizer every 6 weeks during the growing season.
- Prune lightly after flowering to shape the plant and encourage new growth.
- Mulch around the base to retain moisture and suppress weeds.
Pro Tip
Soak seeds overnight before planting to enhance germination success.
Keep It Thriving
Care Guide
Do
- Water consistently, especially during dry spells 🌱
- Prune after flowering to maintain shape
- Use a balanced fertilizer every 6 weeks
Don't
- Avoid overwatering to prevent root rot ❌
- Do not disturb roots during flowering
- Skip fertilizing in late fall
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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
Blue Broom Psoralea questions
What zones can Blue Broom Psoralea grow in?
Blue Broom Psoralea 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 Broom Psoralea deer resistant?
Yes — Blue Broom Psoralea is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Blue Broom Psoralea bloom?
Blue Broom Psoralea typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Blue Broom Psoralea need full sun?
Blue Broom Psoralea does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Blue Broom Psoralea drought tolerant?
Yes — once established (usually after the first full season), Blue Broom Psoralea handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Psoralea to compare
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow Blue Broom Psoralea 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.