PlantFun
Plant Needs
Sunlight
Full sun to partial shade; requires clear, unpolluted water to allow light penetration to submerged foliage
Watering
Requires consistent, cool freshwater; avoid stagnant or nutrient-overloaded water to prevent algal blooms
Temperature
Thrives in cool temperate aquatic conditions; avoid water temperatures exceeding 22°C to prevent stress and reduced growth
Characteristics
- Leaf: Submerged linear, thread-like bright green leaves arranged in basal rosettes
- Flower: Pale blue to white, five-lobed bell-shaped blooms on upright emergent stems
- Stem: Slender, hollow flowering stems rise vertically from submerged basal growth
Care Guide
Watering
Maintain stable water level; ensure adequate water circulation for oxygenation
Fertilization
Diluted aquatic plant fertilizer once monthly. Use low-nitrogen fertilizer to avoid excessive algal growth; apply directly to the substrate near basal rosettes
Dechlorinated aquarium water runoff：Use water from weekly freshwater aquarium changes to supplement nutrients; avoid overapplication to prevent algal bloomsPruning
- Remove yellowing or decaying submerged leaves to maintain water clarity and reduce nutrient buildup
- Trim spent flowering stems after bloom to prevent organic matter from decomposing in the water
- Thin overcrowded basal rosettes in spring to improve light access and water circulation
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Mildly toxic; ingestion can lead to vomiting, diarrhea, and lethargy
Humans: Ingestion of large quantities may cause mild gastrointestinal upset including nausea and abdominal pain
Garden Uses & Culture
Culture: N/A
Usage: Aquatic ornamental for pond gardens; provides shelter and foraging habitat for small aquatic invertebrates
