PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in open, disturbed areas and tolerates roadside conditions
Watering
Water when the top 2 cm of soil dries out; drought-tolerant once established, avoid overwatering
Temperature
Tolerates light frost (0°C); grows best in 15–25°C; avoid extreme heat above 30°C
Characteristics
- Leaf: Lanceolate to oblong leaves with toothed margins, covered in glandular sticky hairs
- Flower: Clusters of yellow daisy-like composite flowers with small ray florets
- Stem: Erect, branched stems densely coated in sticky, glandular hairs
Care Guide
Watering
Keep soil slightly moist during active growth periods
Fertilization
Diluted balanced liquid feed once monthly. Use low-nitrogen feed to prioritize flower production over leaf growth
Composted eggshell powder：Mix 1 tablespoon of finely ground, fully dried eggshell powder into the top 2 cm of soil every 2 months to improve soil drainage and nutrient contentPruning
- Deadhead spent flower clusters to encourage prolonged blooming through the growing season
- Thin overcrowded stems to improve airflow and reduce disease risk
- Cut back dead foliage after flowering to prevent fungal spore buildup for subsequent plantings
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic due to pyrrolizidine alkaloids; may cause liver failure with repeated exposure
Humans: Contains pyrrolizidine alkaloids; prolonged ingestion may cause liver damage; skin contact can cause mild irritation
Garden Uses & Culture
Culture: N/A
Usage: Ornamental wildflower for pollinator gardens; provides nectar for bees and butterflies
