Scorpion senna
Coronilla emerus · Fabaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around scorpion senna and prepare for winter.
ID card
- Foliage
- Deciduous, compound and finely cut
- Blooming
- April to June, yellow and red flowers in small clusters
- Mature size
- Approximately 1.2 m in height and spread
- Growth
- Moderate
- Hardiness
- Down to around -15 °C
- Origin
- Southern Europe and Western Asia
- Soil type
- Well-drained, calcareous, poor to average
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Coronilla emerus won't tolerate waterlogging and thrives best in free-draining, stony or sandy soil. After flowering, prune lightly to maintain a compact shape; without pruning, it gets leggy and deteriorates.
The common mistake
Watering it like a standard shrub invites root problems, especially in heavy soil.
The pro's trick
Plant it in a raised bed or well-drained border, ideally with gravel mulch at the base.
Care
Light exposure
Coronilla emerus thrives in full sun for generous blooming. It also accepts semi-shaded exposure, but flowering will be less abundant. Avoid overly shady areas that slow its growth.
Watering
This plant is very tolerant of drought once established. Water regularly during the first two years after planting to promote root development. Afterward, light watering during very hot periods is generally sufficient.
Pruning and shaping
Prune lightly after flowering (June-July) to maintain a compact shape and encourage branching. Remove dead or diseased branches as needed. Severe pruning is not necessary.
Soil
Coronilla emerus prefers calcareous, well-drained and poor soils. However, it adapts to various soils as long as they are not too moist. Improve drainage if your soil is heavy by incorporating gravel or sand.
Fertilizing
Like all fabaceae, coronilla naturally enriches the soil thanks to its symbiotic bacteria. A moderate addition of compost at planting is sufficient; subsequent fertilizer applications are generally not necessary.
Diseases and pests
This is a robust plant that is seldom prone to diseases. Above all, avoid stagnant moisture which could promote rot. No serious problems to expect under normal growing conditions.
Did you know?
Coronilla emerus takes its name from the Latin 'corona' (crown) referring to the arrangement of its flowers in small tight clusters. Once cultivated throughout Europe for the beauty of its bright yellow and red blooming, it is also an ecological pioneer valued for vegetating dry slopes and unproductive embankments.
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.
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Tips generated and checked by Viridia — adapt them to your local climate.