Common broom
Cytisus scoparius
A short-lived pioneer that fixes nitrogen and colonises poor, bare ground fast — a great early soil-builder, but invasive and fire-prone outside its native range.
Common broom in a syntropic line
Common broom belongs in the Shrub layer as a Secondary nitrogen-fixing biomass species. Support species, fruit, and nitrogen fixers under the canopy. Rough in-row spacing starts around 0.7 m in a syntropic row. Good line partners include Carob tree, Common sage. As a Secondary species it carries mid-term yield and structure while climax trees slowly claim the canopy.
Tolerances and growing conditions
- Strata
- Shrub
- Lifecycle
- Secondary
- Soil preference
- Sandy, Rocky
- Soil pH range
- 4.5 – 7
- Min. temperature
- -20°C
- Min. rainfall
- 400 mm/year
- Wind tolerance
- Medium
- Frost tolerance
- High
- Growth rate
- Fast
- Irrigation needed
- Low
- Foliage
- Deciduous
- Waterlogging tolerance
- Low
- Origin
- Europe
- Native to Portugal
- Yes
How to manage it
Fast nitrogen-fixing pioneer for poor, acid soils; chop after flowering for mulch and to limit seed set before it goes woody.
How to propagate
Sow seed in spring (scarify first) or take softwood cuttings in early summer.
Guidance, not a guarantee — success varies by species and skill.
What to watch out for
Seeds and foliage are toxic to livestock; very flammable when dry; classed as highly invasive in North America, Australia and New Zealand — check local regulations before planting.
Frequently asked questions about Common broom
Is common broom frost-hardy?
Yes for winter cold in many climates — generally hardy to around -20°C when dormant, with high frost tolerance in the catalog. Flowering crops can still lose a season to late frost, so site them carefully.
What soil does common broom need?
It does best on sandy, rocky ground, at pH about 4.5–7.
How much water does common broom need?
Plan for a rainfall floor around 400 mm/year, plus low irrigation once established.
Can common broom handle wet or waterlogged soil?
Poorly — common broom has low waterlogging tolerance, so keep it off winter-wet clay and standing water.
What should I watch out for with common broom?
Seeds and foliage are toxic to livestock; very flammable when dry; classed as highly invasive in North America, Australia and New Zealand — check local regulations before planting.
Common broom in soil templates
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