PlantFun
Plant Needs
Sunlight
Full sun preferred for abundant flowering; tolerates partial shade in hot climates
Watering
Drought-tolerant; water only during prolonged dry periods to avoid root rot
Temperature
Hardy to -15°C; withstands cold temperate winters and warm summer heat
Characteristics
- Leaf: Small, linear to lanceolate, gray-green, alternate, semi-evergreen
- Flower: Dense terminal racemes of bright yellow pea-shaped blooms
- Stem: Slender, green to brown, woody at the base with herbaceous upper growth
Care Guide
Watering
Water occasionally during extended dry spells; allow soil to dry between waterings
Fertilization
Diluted balanced liquid feed once monthly. Avoid high-nitrogen fertilizers to prevent excessive foliage growth over blooms
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels and deter slugs without introducing excess nutrientsPruning
- Prune lightly immediately after flowering to maintain compact shape and encourage new growth
- Remove dead or damaged stems in early spring before new growth emerges
- Thin overcrowded branches to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, lethargy
Humans: Contains quinolizidine alkaloids; large ingestion may cause mild gastrointestinal upset
Garden Uses & Culture
Culture: Historically used to produce yellow dye for textiles; symbolizes resilience in wild landscapes
Usage: Ornamental garden plant, wildlife nectar source for bees, traditional dye plant
