PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in open wet habitats and tolerates mild shade
Watering
Requires consistently saturated soil or 2–5 cm of shallow standing water; avoid drying out completely
Temperature
Tolerates mild frost; optimal growth between 15–25℃; protect from hard freezes below 5℃
Characteristics
- Leaf: Reduced to brown, sheathing bracts at stem base; no true foliage leaves
- Flower: Dense, spherical, brownish-green flower heads at stem apices
- Stem: Erect, smooth, cylindrical green stems with internal air channels
Care Guide
Watering
Maintain 2–5 cm of standing water; top up as water evaporates
Fertilization
Diluted balanced aquatic feed once monthly. Use low-nitrogen feed to minimize algae growth in standing water
Banana peel compost tea：Fully compost banana peels first; dilute 1:40 for root drench; avoid applying directly to standing water to prevent algae bloomsPruning
- Trim dead stems and spent flower heads in late winter to encourage new spring growth
- Thin overcrowded clumps every 2–3 years to improve airflow and vigor
- Remove yellowing foliage promptly to prevent decay in waterlogged conditions
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA does not list this species as toxic to cats
Humans: No documented toxicity to humans per authoritative sources
Garden Uses & Culture
Culture: N/A
Usage: Ornamental wetland planting; erosion control for pond edges
