PlantFun
Plant Needs
Sunlight
Full sun exposure for optimal flowering; tolerates partial shade but produces fewer blooms
Watering
Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot
Temperature
Hardy to light frost; grows best in 15–25°C; avoid prolonged extreme heat above 30°C
Characteristics
- Leaf: Basal rosette leaves are lobed and hairy; upper stem leaves are smaller, lanceolate, and clasping
- Flower: Four bright yellow petals in cross shape; clustered in terminal racemes
- Stem: Erect, branched, covered in coarse hairs
Care Guide
Watering
Keep soil consistently moist during active growth; avoid waterlogging
Fertilization
Light, diluted balanced feed once monthly. Avoid over-fertilizing, as excessive nitrogen can reduce bloom production
Eggshell powder top dressing：Crush dried eggshells into fine powder; sprinkle lightly on the soil surface to boost calcium levels and reduce risk of blossom end rotPruning
- Deadhead spent blooms to extend the flowering period and prevent excessive self-seeding
- Thin overcrowded stems to improve airflow and reduce disease risk
- Remove yellowing or damaged foliage to maintain plant health
- Pull entire plant after seed set for annual garden cleanup
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Mild toxicity from glucosinolates; may cause vomiting or diarrhea if ingested
Humans: Contains glucosinolates; ingestion of large raw quantities may cause mild gastrointestinal irritation
Garden Uses & Culture
Culture: N/A
Usage: Cover crop to suppress weeds; forage for livestock (in moderation); young leaves are edible when cooked to reduce glucosinolate content
