Proserpinaca palustris
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Proserpinaca palustris - Striking Simplicity
Proserpinaca palustris, also known as mermaid weed, doesn’t just show up to the party—it glows up when the lighting’s right. With its delicate, saw-toothed leaves and rich hues that range from lime green to copper-red, this North American native quickly became a standout in modern aquascaping circles. You’ll find it nestled among our AquaZen collection and prominently featured in our Featured section—and for good reason.
This versatile beauty doesn’t fuss much. Give it medium lighting, maybe a splash of CO₂ if you're feeling fancy, and it’ll grow with quiet confidence. When lit just right, it throws a subtle red tint that’s like fall foliage in a freshwater tank.
Why Proserpinaca palustris Is Stealing the Spotlight in Aquatic Plant Circles
You’ll often see Proserpinaca palustris showcased in aquascapes that favor a layered, natural layout. Unlike fast-growing background plants that get too tall too fast, this one gives you options—foreground or midground, it plays both roles well.
It’s also part of our handpicked Aquatic Plants – Staff Selections collection, so you know it’s trusted by hobbyists and pros alike.
Specs at a Glance: Proserpinaca palustris Quick Facts
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Common Name: Mermaid Weed
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Family: Haloragaceae
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Native Range: North America
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Ideal Placement: Foreground to Midground
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Height Range: 4–16 inches
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Water Temp: 72–82°F
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pH Range: 5.0–7.0
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Lighting Needs: Medium (higher light brings out red tones)
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Growth Speed: Moderate
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CO₂: Optional but encouraged for vibrant color
Styling Tips for Proserpinaca palustris in Your Aquarium
Proserpinaca palustris adds that refined, textured look that elevates a tank from “pretty nice” to “where did you get that?” It blends beautifully with finer-leaf plants like Rotala or contrasts nicely with big-leaf species like Hygrophila. We recommend trimming regularly to keep it dense and full—otherwise, it might get leggy and awkward, like a houseplant that missed leg day.
Frequently Asked Questions About Proserpinaca palustris
What lighting brings out Proserpinaca palustris' red coloration?
Brighter, medium-to-high light intensity will enhance the reddish tones, especially in the upper leaves.
Can I grow Proserpinaca palustris without CO₂?
Yes, it grows in low-tech setups, but with CO₂ you’ll get denser, more colorful foliage.
Is this plant safe for shrimp and snails?
Absolutely. It’s a gentle species that won’t release toxins or mess with your invertebrates.
How often should I trim it?
Trim every 1–2 weeks, depending on your lighting and nutrient levels. It rebounds quickly.
Does it root easily in substrate?
It anchors itself quite well in fine gravel or aquasoil. Use tweezers for precise planting.


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