PlantFun
Plant Needs
Sunlight
Bright indirect to partial direct sunlight; avoid prolonged midday sun to prevent excess algae growth in surrounding water
Watering
Requires consistent shallow freshwater (2–5 cm depth); maintain clean, well-aerated water to prevent stagnation
Temperature
Thrives in cool to temperate temperatures; avoid extreme heat above 28°C or freezing conditions that damage foliage
Characteristics
- Leaf: Opposite, oblong to elliptic, 2–5 mm long, bright green submerged foliage
- Flower: Tiny, white to pale pink, 3–4 petals, borne in axils of upper leaves
- Stem: Slender, creeping, rooting at nodes to form dense mats
Care Guide
Watering
Maintain stable water level; top up with dechlorinated water as needed
Fertilization
Diluted aquatic fertilizer application. Use low-nitrogen aquatic fertilizer to avoid algae blooms
Established aquarium water runoff：Siphon 10% of water from a mature, algae-free aquarium to top up the waterwort habitat; avoid adding raw organic materials to prevent foulingPruning
- Trim overgrown mats to maintain uniform carpet density
- Remove dead or yellowing foliage promptly to prevent water fouling
- Thin dense patches to improve water circulation and light penetration
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: No reported toxicity to cats (ASPCA unlisted, no documented adverse effects)
Humans: No known toxicity to humans
Garden Uses & Culture
Culture: N/A
Usage: Aquarium foreground carpet, pond edge groundcover for small water features
