Lobelia cardinalis – Cardinal Plant for Planted Aquariums

Lobelia cardinalis, commonly known as the Cardinal Plant, is a beautiful and less common aquatic plant that can add a fresh green appearance and natural character to a planted freshwater aquarium. It works particularly well in the foreground or middle ground, while larger specimens can also be used as a background plant.

Native to North America, Lobelia cardinalis naturally grows along streams, rivers, and other waterways. When grown fully submerged in an aquarium, it develops attractive green leaves, with the undersides sometimes showing a subtle red-purple coloration. When grown emersed, the plant is especially well known for producing striking red flowers.

Growing in an Aquarium

Lobelia cardinalis performs best under moderate to high aquarium lighting. Regular trimming helps control its height and encourages the plant to produce additional side shoots, allowing it to develop into a fuller and more attractive group.

Providing suitable aquarium fertilizers can support healthy growth and help maintain good leaf coloration. With proper lighting, nutrients, and regular maintenance, Cardinal Plant can become an attractive feature in a planted aquarium or aquascape.

Care Information

• Common Name: Cardinal Plant
• Scientific Name: Lobelia cardinalis
• Family: Lobeliaceae
• Origin: North America
• Plant Position: Foreground / Middle Ground / Background
• Height: Approximately 10–12 inches
• Lighting: Moderate to High
• pH: 6.0–7.5
• Temperature: 18–29°C
• Growth: Trimming encourages side shoots and fuller growth

Why Choose ?

Lobelia cardinalis is a great choice for aquascapers looking for a unique freshwater aquarium plant that can add texture and natural greenery to their aquascape. Its adaptable growth habit makes it suitable for different aquarium layouts, while regular trimming can help create a dense and attractive appearance.

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