PlantFun
Plant Needs
Sunlight
Full sun exposure for optimal flowering; tolerates partial shade but reduces bloom production
Watering
Water deeply once weekly in growing season; drought-tolerant once established, avoid overwatering
Temperature
Hardy to -10°C; prefers warm, dry summers and cool, well-drained winter conditions
Characteristics
- Leaf: Small, linear, silvery-green leaves, sparse on mature stems
- Flower: Bright yellow pea-like blooms in dense terminal racemes, fragrant
- Stem: Slender, green to brownish woody stems, nearly leafless in established plants
Care Guide
Watering
Water deeply when top 5–7 cm of soil is dry; allow soil to dry between waterings
Fertilization
Apply diluted balanced fertilizer once at new growth onset. Use low-nitrogen fertilizer to prioritize flower production over foliage
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to improve drainage and add calcium to support stem strengthPruning
- Prune immediately after flowering to maintain compact mounding shape
- Remove dead or damaged stems in early spring to encourage new growth
- Thin overcrowded branches to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; contains sparteine alkaloids that may cause neurological and cardiac effects
Humans: Ingestion causes mild gastrointestinal upset; contact with sap may irritate sensitive skin
Garden Uses & Culture
Culture: Symbolizes resilience and sunshine in Mediterranean folklore
Usage: Ornamental garden shrub; traditional yellow dye source from blooms
