Proserpinaca Palustris - Mermaid Weed

Proserpinaca palustris

Mermaid Weed – Unique Serrated Red-Green Stem Plant

Proserpinaca palustris, commonly known as Mermaid Weed, is a distinctive and visually striking stem plant appreciated for its deeply serrated, saw-like leaves and dramatic color shift between emersed and submerged growth. When grown submerged under strong light, the foliage transitions from green to vivid copper, orange, and red tones, making it an excellent accent plant for aquascapers looking to add texture and contrast beyond typical leaf shapes.

🌱 Key Features

• Deeply serrated, jagged leaf edges

• Strong color shift from green to copper/red

• Upright stem growth with bold texture

• Highly distinctive appearance compared to standard stem plants

• Excellent contrast plant in mixed layouts

⚙️ Optimal Aquarium Parameters

Difficulty: Medium
Growth Rate: Moderate
Placement: Midground to Background

🌡️ Water Parameters

• Temperature: 18–26 °C (64–79 °F)

• pH: 5.5–7.5

• GH: 2–10 dGH

• KH: 1–6 dKH

• TDS: ~80–200 ppm

💡 Lighting

• Requirement: Medium to High

• High light is necessary for strong coloration and compact growth

• Lower light results in greener leaves and reduced serration definition

💨 CO₂

• Recommended

• CO₂ improves growth speed, leaf structure, and color intensity

🌿 Nutrients

• Primarily a water-column feeder

• Requires consistent macro nutrients, especially nitrates

• Iron and trace elements enhance red and copper tones

• Stable fertilization prevents stunting or leaf deformation

✂️ Care & Maintenance

• Trim tops regularly and replant to maintain density

• Remove older lower leaves as stems mature

• Sensitive to instability—consistent light, CO₂, and nutrients are important

🐟 Compatibility

• Safe for shrimp, snails, and peaceful community fish

• Provides interesting structure for fry to hide among

• Best suited for high-tech, Dutch-style, and showcase aquariums