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Alternanthera Rosaefolia Rosenvig Potted – Red Midground Aquarium Plant for Aquascaping & Planted Tanks
 
Alternanthera rosaefolia Rosenvig is a striking midground aquarium plant known for its rich red and purple foliage. Perfect for adding vibrant colour and structure, it thrives under moderate to high lighting with CO2 supplementation. Ideal for aquascapers seeking bold contrasts and textured layouts in both nano and larger tanks.
 
KEY BENEFITS
Intense red-purple foliage creates dramatic midground contrast
Compact growth keeps layouts neat and structured
Adds depth and layering in nature-style and Dutch aquascapes
Provides surfaces for grazing shrimp and fry
Performs well under high lighting with CO2 supplementation
Excellent feature plant for focal points or colour accents
 
IDEAL FOR
Nature-style, Dutch, and Iwagumi-inspired aquascapes
Nano tanks and medium display aquariums
Beginner to advanced aquascapers seeking colour contrast
Shrimp and community aquariums
Midground accent in structured planted layouts
 
CARE SNAPSHOT
Difficulty: Moderate
Lighting: Medium to high
CO2: Recommended
Growth: Moderate
Placement: Midground
 
Alternanthera rosaefolia Rosenvig stands out for its deep red, slightly purple-tinged leaves that form dense, upright clusters. Its compact size and colourful foliage make it ideal for midground placement, bridging green foreground carpeting plants and taller background species.
The plant develops upright stems with rounded leaves, creating a bushy appearance that enhances texture in aquascapes. Under high light and with CO2, its red pigmentation becomes even more intense, giving aquascapes a dramatic focal point.
What makes Alternanthera rosaefolia Rosenvig unique is its ability to maintain compact, vibrant growth in a midground position, even in smaller tanks. Regular trimming encourages bushier growth and helps maintain its rich colour. Some fading or leaf loss may occur initially if lighting or nutrient levels fluctuate, but stable conditions allow it to thrive beautifully.
 
SPECIFICATIONS
Scientific name: Alternanthera rosaefolia ‘Rosenvig’
Common name: Rosenvig Alternanthera
Origin: South America
Height: 10–20 cm
Placement: Midground
Lighting: Medium to high
CO2: Recommended
Temperature: 22–28°C
pH: 6.0–7.5
 
CARE GUIDE
Planting
Remove from its pot and rinse away rock wool. Plant individual stems or small clusters in aquasoil using tweezers, leaving slight gaps for light penetration and even growth.
Trimming
Trim regularly to encourage branching and maintain a compact shape. Use trimmed stems for propagation.
Feeding
Use nutrient-rich substrate and supplement with liquid fertilisers, particularly those containing iron, to enhance red pigmentation. Root tabs can help in lower nutrient substrates.
CO2 Notes
CO2 injection is strongly recommended to maintain strong red coloration and compact, healthy growth. Without CO2, stems may elongate and leaves may lose intensity.
 
FAQ SECTION
Does this plant need CO2?
CO2 is recommended for optimal colour and compact growth. Without it, growth is slower and foliage may turn green.
Why are my leaves turning pale or green?
This usually indicates insufficient light or iron in the substrate. Adjust lighting and supplement nutrients to restore red pigmentation.
How fast does it grow?
Moderate under good conditions; forms dense midground clusters over time.
Is it suitable for nano tanks?
Yes, its compact growth makes it ideal for smaller aquascapes.
Can it be used in shrimp tanks?
Yes, it provides excellent grazing surfaces and shelter for shrimp.
How do I propagate it?
Trim healthy stems and replant in substrate; new shoots will develop from the nodes.
 
PAIRS WELL WITH
Nutrient-rich aquasoil for strong roots
CO2 systems for colour and compact growth
Iron-rich liquid fertilisers
Foreground plants like Dwarf Hairgrass or Monte Carlo
Background plants with contrasting green tones
Driftwood or stone to enhance midground colour focus