PlantFun
Plant Needs
Sunlight
Full sun to partial shade; full sun promotes the most abundant flowering, while partial shade suits hot summer regions
Watering
Water deeply when the top 5 cm of soil dries out; drought-tolerant once established, but benefits from consistent moisture during active growth
Temperature
Hardy to -15°C, thriving in temperate summer temperatures between 18–25°C; tolerates light frost in early spring
Characteristics
- Leaf: Opposite, palmately lobed, rough-textured leaves with serrated margins
- Flower: Dense flat-topped corymbs of tiny pinkish-lilac composite flower heads
- Stem: Erect, hairy green stems that mature to reddish-brown
Care Guide
Watering
Keep soil evenly moist during active growth; avoid waterlogging
Fertilization
Apply balanced diluted liquid feed once monthly. Avoid high-nitrogen fertilizers to prevent leggy, weak stem growth
Composted banana peel tea：Soak fully composted banana peels in water for 3 days, dilute 1:20 with tap water for root drench; discard solid peels to prevent odor and pest infestationsPruning
- Deadhead spent flower heads to encourage prolonged late-season flowering (optional)
- Cut back all stems to ground level in late winter to stimulate vigorous new spring growth
- Thin overcrowded clumps every 2–3 years in early spring to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed non-toxic to cats; no reported toxicity
Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Pollinator-friendly garden plant; historically used in herbal medicine for mild digestive and respiratory ailments
