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LOBELIA CARDINALIS – Decorative Marsh Plant with Scarlet Flowers
Lobelia cardinalis is a North American native plant known for its upright growth, striking coloration, and remarkable adaptability. In nurseries, it is grown in marshy conditions where it develops dark green leaves with purple undersides. When submerged in an aquarium, its foliage turns a vibrant light green, creating a strong visual contrast and adding a refined, natural touch to any aquascape.
With a compact, upright growth habit, Lobelia cardinalis reaches heights between 10 and 30 cm and spreads about 5 to 10 cm wide. It thrives under intense lighting, which enhances its coloration and keeps its form well defined. Frequently used in Dutch-style aquariums, it’s ideal for creating orderly plant arrangements or the famous “plant streets”.
In open-top tanks, this plant can grow above the water surface, where it produces spectacular scarlet flowers. During this emergent phase, the leaves regain their original green-purple tones, making it an impressive ornamental feature both underwater and above.
Key features:
North American origin, grown in marsh conditions
Dark green leaves with purple undersides in emersed form
Bright light green foliage when submerged
Upright, compact and tidy growth
Height 10–30 cm, width 5–10 cm
Requires strong lighting for optimal health
Produces scarlet flowers in open-top aquariums
Perfect for Dutch layouts and plant streets
Why choose Lobelia cardinalis:
Lobelia cardinalis is a highly decorative aquatic plant ideal for precise aquascaping and structured layouts. Visually appealing both submerged and emersed, it adds depth, vibrant color, and spectacular blooms to any aquarium setting, making it a standout choice for aquarists seeking both elegance and functionality.
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