PlantFun
Plant Needs
Sunlight
Requires full sun to partial shade; full sun promotes abundant flowering and tuber development
Watering
Requires permanent shallow standing water (10–30 cm depth) or submerged growth; avoid rapid water level fluctuations
Temperature
Tolerates cool to warm temperatures; dormant tubers can survive light frosts in cold regions
Characteristics
- Leaf: Variable form; emergent leaves are glossy arrowhead-shaped, submerged leaves are narrow and linear
- Flower: Fragrant white three-petaled blooms arranged in whorled clusters on upright hollow stems
- Root: Tuberous underground roots (edible duck potatoes) store energy for dormancy
Care Guide
Watering
Maintain consistent water depth; top up with dechlorinated water as needed to prevent drying
Fertilization
Diluted aquatic plant fertilizer applied to submerged soil once monthly. Avoid over-fertilization to prevent algae blooms in the water garden
Composted banana peel tea：Fully compost banana peels, steep in dechlorinated water for 3 days, dilute at a 1:20 ratio, and pour directly into the submerged soil to avoid water fouling; do not use raw peelsPruning
- Remove yellowing or decaying foliage regularly to maintain water clarity and prevent nutrient buildup
- Trim spent flower stems after blooming to redirect energy to tuber development
- Thin overcrowded plants in early spring to improve light penetration and reduce competition for nutrients
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no known adverse effects from ingestion
Humans: Non-toxic to humans; edible tubers are safe for consumption when cooked
Garden Uses & Culture
Culture: N/A
Usage: Edible tubers (duck potatoes) for human consumption; ornamental aquatic plant for water gardens and pond edges
