Montpellier broom
Genista monspessulana · Fabaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around montpellier broom and prepare for winter.
ID card
- Foliage
- Evergreen, light green trifoliate leaves
- Flowering
- Spring (April-May), golden yellow flowers
- Mature size
- 1.5 to 2.5 m tall, 1.5 to 2 m wide
- Growth rate
- Fast to moderate
- Hardiness
- Zones 8 to 10, dislikes intense frost below -15°C
- Origin
- Mediterranean Basin (Montpellier, France)
- Soil type
- Well-draining, light soil, tolerant of poor and chalky soils
Care
Sunlight
Montpellier broom requires a sunny or partially shaded location to flower abundantly. Position it near a south- or west-facing wall receiving a minimum of 6 hours of sun daily. Too much shade will slow flowering and result in a sparse habit.
Watering
Once established, this shrub is highly drought-tolerant. Water regularly during the first year after planting to encourage root development. Subsequently, moderate watering is sufficient except during prolonged dry spells. Avoid excess moisture, which promotes root rot.
Pruning
Prune lightly after flowering (May-June) to maintain a compact, dense shape. Remove dead or damaged branches in early spring. Avoid severe pruning on old wood, as it heals poorly.
Soil
Montpellier broom adapts well to poor and chalky soils. Loosen the soil at planting and enrich slightly with compost. Drainage is essential: in heavy soil, add sand or gravel to prevent waterlogging.
Fertilizing
As a Fabaceae, it naturally enriches soil through nitrogen-fixing root nodules. A balanced fertilizer application in spring is sufficient. Avoid excess nitrogen, which promotes foliage at the expense of flowers.
Diseases and Pests
Generally disease-free if well-drained. In excessively moist conditions, root rot may occur. Watch for aphids in spring, treatable with soapy water spray. Ensure good air circulation at the base to prevent fungal issues.
Did you know?
Montpellier broom long supplied a highly prized yellow dye in the Middle Ages: the flowers were fermented to obtain a stable colorant used in dyeing. Its local Spanish name, 'canelilla,' recalls its thread-like appearance. Today considered invasive in some Mediterranean regions, it escapes gardens and colonizes wastelands, testifying to its remarkable resilience.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- Chinese wisteriaWisteria sinensis
- Common broomCytisus scoparius
- Black locustRobinia pseudoacacia
- Common PeaLathyrus oleraceus
- Honey locustGleditsia triacanthos
- Hairy greenweedGenista pilosa
Tips generated and checked by Viridia — adapt them to your local climate.