PlantFun
Plant Needs
Sunlight
Partial sun to full shade; tolerates dappled light over shallow water; avoid intense midday sun
Watering
Keep soil consistently moist or submerged in 1–2 cm of shallow water; avoid allowing the substrate to dry out completely
Temperature
Hardy to light frost; thrives in cool temperate conditions; avoid prolonged temperatures above 28°C
Characteristics
- Leaf: Opposite, oval to lanceolate, glossy green leaves with smooth margins
- Flower: Tiny, four-petaled pale blue to violet blooms in axillary clusters
- Stem: Creeping, fleshy stems that root at nodes in moist soil
Care Guide
Watering
Keep substrate fully saturated or submerged 1–2 cm deep
Fertilization
Diluted balanced feed every 2 weeks. Avoid over-fertilizing to prevent algal growth in aquatic growing conditions
Composted banana peel tea：Steep fully composted banana peels in water for 3 days; dilute 1:20 for root drench; avoid adding solid peels to prevent pest attractionPruning
- Trim back overgrown stems to maintain a compact mat habit
- Remove spent flower heads to encourage prolonged blooming through summer
- Thin dense growth to improve airflow and reduce risk of rot in damp conditions
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats
Humans: Non-toxic to humans; young leaves are edible in small quantities
Garden Uses & Culture
Culture: N/A
Usage: Edible young leaves for salads; ornamental aquatic ground cover for pond edges
