PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in open wetland habitats with unobstructed sunlight
Watering
Keep soil consistently moist; tolerates shallow standing water for short periods
Temperature
Tolerates mild spring frost; prefers cool to temperate growing temperatures
Characteristics
- Leaf: Narrow linear to lanceolate leaves, oppositely or whorled arranged, bright medium green.
- Flower: Tiny pink to pale purple 6-petaled blooms clustered in terminal spikes.
- Stem: Slender, branching green stems with smooth, hairless texture.
Care Guide
Watering
Maintain consistent soil moisture; avoid allowing substrate to dry out completely
Fertilization
Diluted balanced liquid feed every 2 weeks. Avoid over-fertilizing to prevent excessive foliage growth at the expense of blooms
Eggshell powder topdress：Crush thoroughly dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels without root burnPruning
- Deadhead spent flower spikes to encourage extended blooming period
- Trim yellowing or damaged foliage to maintain tidy plant appearance
- Cut back entire plant to ground level after frost for winter cleanup
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported toxicity
Humans: Non-toxic to humans; no known adverse effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Wetland restoration, ornamental pond edge planting, container water gardens
