PlantFun
Plant Needs
Sunlight
Full sun to partial shade; provide afternoon shade in hot summer climates to prevent heat stress
Watering
Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot
Temperature
Hardy to -10°C; prefers cool temperatures, avoid prolonged exposure above 28°C
Characteristics
- Leaf: Deeply lobed palmate leaves with narrow pointed segments; bright green, delicate texture
- Flower: Dense terminal racemes of small spurred blue to purple blooms with a distinctive nectar spur
- Stem: Slender upright green stems with fine pubescence; branching near the top
Care Guide
Watering
Keep soil consistently moist but not waterlogged; increase frequency during hot, dry spells
Fertilization
Apply balanced slow-release fertilizer once at planting. Avoid high-nitrogen fertilizers to prevent leggy, weak stems
Eggshell powder top-dress：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around plant bases to boost soil calcium and reduce blossom end rot riskPruning
- Deadhead spent blooms to encourage secondary flowering and extend bloom time
- Cut back stems to basal foliage after flowering to prevent unwanted self-seeding
- Remove damaged or diseased stems in early spring to improve airflow
- Thin overcrowded plants in mid-spring to reduce competition for nutrients
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion leads to vomiting, muscle weakness, and potential seizures
Humans: Contains toxic alkaloids; ingestion causes gastrointestinal and neurological distress
Garden Uses & Culture
Culture: Symbolizes an open heart and ardent attachment in traditional floriography
Usage: Ornamental wildflower in native plant gardens; attracts pollinators including bees and butterflies
