PlantFun
Plant Needs
Sunlight
Partial shade to full sun; prefers dappled woodland light, avoid intense midday summer sun in hot climates
Watering
Water thoroughly when the top 2 cm of soil feels dry; avoid waterlogging to prevent root rot
Temperature
Hardy to USDA zone 7; tolerates mild winter frosts, avoid prolonged temperatures above 38°C
Characteristics
- Leaf: Opposite, heart-shaped, glossy dark green, 5–12 cm long with smooth margins
- Flower: Star-shaped, maroon-purple, foul-smelling, clustered in leaf axils
- Stem: Slender, twining, exudes milky white sap when damaged
Care Guide
Watering
Keep soil consistently moist but not saturated
Fertilization
Apply diluted organic fertilizer every 2 weeks. Use low-nitrogen fertilizer to support flowering rather than excessive foliage growth
Banana peel compost tea：Compost banana peels for 2–3 weeks, steep in water at a 1:20 ratio, and drench soil to boost flowering and foliage health; avoid raw peels to prevent pest infestationsPruning
- Remove dead, damaged, or overgrown vines in early spring to stimulate new growth
- Trim back flowering stems after bloom to control spread and prevent unwanted self-seeding
- Tie twining stems to supports to guide growth and improve air circulation
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, and drooling due to sap compounds
Humans: Contains mild cardiac glycosides; ingestion may cause nausea, stomach pain, or oral irritation
Garden Uses & Culture
Culture: N/A
Usage: Native pollinator host plant for monarch butterflies; ornamental vine for woodland gardens
