PlantFun
Plant Needs
Sunlight
Partial sun to full sun; prefers morning sun with afternoon shade in hot climates to prevent leaf scorch
Watering
Water deeply when the top 5 cm of soil is dry; avoid overwatering to prevent root rot and fungal growth
Temperature
Hardy to -10°C; thrives in cool to temperate temperatures; avoid prolonged exposure to heat above 25°C
Characteristics
- Leaf: Basal rosette of soft, hairy, ovate leaves with serrated margins; stem leaves are smaller and alternate
- Flower: Dense terminal racemes of tubular, bell-shaped purple (rarely white/pink) flowers with spotted throats
- Stem: Erect, hairy green stems with limited branching near the top
Care Guide
Watering
Keep soil consistently moist but not waterlogged; apply mulch to retain soil moisture
Fertilization
Apply balanced diluted liquid fertilizer once every 2 weeks. Use a low-nitrogen fertilizer to prioritize flower production over excessive leaf growth
Composted banana peel tea：Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drenching; discard solid peels to avoid pest infestations and odorPruning
- Deadhead spent blooms promptly to encourage secondary flowering in some cultivars and prevent excessive self-seeding
- Cut back flowering stems to the basal rosette after blooms fade to redirect energy to root and leaf growth
- Remove yellowing or damaged basal leaves to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion leads to vomiting, diarrhea, weakness, irregular heartbeat, and potential collapse
Humans: Contains cardiac glycosides; ingestion can cause life-threatening heart rhythm disturbances and neurological symptoms
Garden Uses & Culture
Culture: Symbolizes insincerity in Victorian floriography due to its deceptive attractive appearance and toxic properties
Usage: Ornamental garden plant; source of cardiac glycosides (digitalin) for prescription heart medications
