Yellow crownvetch
Coronilla scorpioides · Fabaceae
The gardener's calendar
Ideal time to plant yellow crownvetch: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Fabaceae (legumes)
- Form
- Annual or biennial herbaceous plant
- Flowering
- Spring to summer (April-July)
- Adult size
- 20–40 cm tall, spreading habit
- Foliage
- Deciduous, compound, pinnate
- Hardiness
- Tender (zones 9–11)
- Origin
- Mediterranean region and Middle East
- Exposure
- Full sun essential
Care
Exposure
Place this plant in full sun, at least 6 hours per day. Coronilla scorpioides needs plenty of light to produce its characteristic curved umbel flowers. Insufficient exposure slows growth and reduces flowering.
Watering
Water moderately and let the soil dry out slightly between waterings. This Mediterranean legume tolerates drought better than excess moisture. In pots, check substrate moisture before watering; in well-draining ground, reduce watering in summer.
Soil
Require very well-draining soil, even rocky or poor soil. Coronilla scorpioides thrives in light, slightly alkaline or neutral substrate. Improve drainage in pots with gravel or clay pellets at the bottom.
Fertilizer
Moderate application of balanced fertilizer in spring is sufficient. Being a legume, it naturally benefits from root symbiosis and doesn't require excessive feeding. In very poor soil, diluted fertilizer every 3 to 4 weeks during the growing period can support flowering.
Pruning and cutting
Pinch young plants to encourage branching and a fuller habit. After flowering, remove spent flowers to extend the blooming period. At the end of the season, lightly cut back stems to shape the plant before winter.
Diseases and pests
Coronilla scorpioides is generally hardy against diseases. Watch for powdery mildew in humid, stagnant conditions and aphids in early spring. Good drainage and adequate air circulation prevent most fungal issues.
Did you know?
Its name 'scorpioides' refers to its curved umbel inflorescences, which evoke a scorpion's tail. This plant was long used in traditional Mediterranean medicine for its diuretic and antispasmodic properties. It remains popular in modern dry and xeriscape gardens.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.