PlantFun
Plant Needs
Sunlight
Partial sun to full sun; tolerates light shade in hot climates to avoid leaf scorching
Watering
Water when top 2–3 cm of soil is dry; avoid waterlogging as roots are prone to rot
Temperature
Hardy to -15°C; thrives in temperate climates, avoid prolonged temperatures above 32°C
Characteristics
- Leaf: Pinnately compound, lobed leaves with slightly hairy texture; emits yellow sap when broken
- Flower: Clusters of four-petaled bright yellow blooms, 1–2 cm in diameter
- Stem: Hollow, branching stems with smooth, slightly waxy surface; exudes toxic yellow latex when cut
Care Guide
Watering
Keep soil evenly moist but not waterlogged; water deeply during dry spells
Fertilization
Diluted balanced feed once every 2 weeks. Use a low-nitrogen feed to promote flowering rather than excessive foliage growth
Eggshell powder top dressing：Crush dried eggshells into fine powder; sprinkle lightly on soil surface and gently work into top layer to avoid disturbing rootsPruning
- Deadhead spent blooms to encourage extended flowering through early summer
- Cut back faded stems to ground level in late autumn to promote new growth in spring
- Remove yellowing or damaged leaves to maintain plant health and improve airflow
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion leads to gastrointestinal distress and potential nervous system effects
Humans: Contains isoquinoline alkaloids; ingestion causes gastrointestinal upset; sap may irritate skin and mucous membranes
Garden Uses & Culture
Culture: Historically used in traditional European medicine for skin conditions; symbolizes protection in some folk traditions
Usage: Ornamental wildflower; limited medicinal use (internal use is not recommended due to toxicity)
