The Story
Plant Bio
Cytisus scoparius is an upright, highly branched deciduous shrub distinguished by its rigid, green, angled stems that perform photosynthesis. It produces small, dark green leaves that drop quickly, leaving the plant functionally leafless for much of the year while bright golden-yellow, pea-like flowers cover the branches from spring to early summer.
As a wild species, it is highly adaptable to poor, sandy, or gravelly soils where its nitrogen-fixing capabilities allow it to thrive. However, its aggressive seeding and high tolerance for drought have made it a severe invasive weed in many regions outside its native Europe.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Shrub
Height
118"
Width
78"
Light
Full Sun
Zones
5, 6, 7, 8
Water
Low
Humidity
Moderate
Lifespan
Moderate
Native To
Europe
Toxicity
Highly toxic to humans and livestock
Bloom period
Spring – Early summer
In flower about 4 months of the year
Planting
How to Grow
- Select a planting site in full sun with sandy, gravelly, or highly drained poor soil.
- Dig a hole twice as wide as the root ball and set the plant at the same depth it was in the container.
- Water thoroughly to settle the soil, but avoid overwatering as the plant is highly intolerant of wet clay.
- Establish the plant without adding fertilizer, as it is adapted to low-fertility environments.
Pro Tip
Never prune this shrub back into old, leafless brown wood, as it lacks the ability to regenerate from mature timber and will die. Additionally, be prepared for long-term management, as the seeds remain viable in the soil seed bank for decades.
Keep It Thriving
Care Guide
Do
- Plant in exceptionally well-drained, poor soils to prevent root rot.
- Prune lightly immediately after flowering to maintain shape if necessary.
- Wear gloves when handling the plant due to the toxicity of its foliage and seeds.
Don't
- Do not cut back into old, bare wood, which kills the stems outright.
- Do not apply fertilizer, as this plant thrives in low-fertility soils.
- Do not plant near waterways or natural areas where it can escape and become invasive.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pest Check | ||||||||||||
| Plant | ||||||||||||
| Prune | ||||||||||||
| Winter Prep |
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
Scotch Broom questions
What zones can Scotch Broom grow in?
Scotch Broom is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Scotch Broom deer resistant?
Yes — Scotch Broom is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Scotch Broom bloom?
Scotch Broom typically blooms in spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Scotch Broom need full sun?
Scotch Broom does best in full sun (6+ hours).
Is Scotch Broom drought tolerant?
Yes — once established (usually after the first full season), Scotch Broom 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 Scotch Broom 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.