Alternanthera cardinalis

Alternanthera cardinalis

Alternanthera cardinalis, commonly known as the Cardinal Plant, is a captivating aquatic plant renowned for its vibrant red to purple foliage that creates striking contrasts in aquascapes. Native to freshwater habitats in South America, this versatile plant often serves as a focal point or background specimen, bringing color and elegance to both small and large aquariums. Its intricate leaf structure and growth habit lend a lush, densely vegetated appearance, making it a favored choice among aquascaping enthusiasts.

Care Guide

To achieve optimal growth and health of Alternanthera cardinalis, consider the following care instructions:

• Lighting: Provide medium to high lighting conditions (around 2-3 watts per gallon) to encourage vibrant color development and robust growth. Bright, indirect light can facilitate more compact growth patterns.

• Substrate: A nutrient-rich substrate is ideal for establishing strong root systems. Consider using a specialized aquatic plant substrate or a mix of gravel and nutrient-rich topsoil.

• Water Conditions: Maintain a temperature range between 72°F to 82°F (22°C to 28°C) and a pH level of 6.0 to 7.5. Frequent water changes enhance water quality and nutrient availability.

• Pruning: Regular trimming encourages bushiness and helps control the growth height. Pinch back the tops of the stems to promote lateral branching.

Nutrient Requirements

Alternanthera cardinalis thrives on the following nutrient conditions:

• Light: As mentioned, this plant flourishes under medium to high light. If lighting is too dim, it may stretch out and lose its vibrant colors.

• CO2: Carbon dioxide enrichment can significantly enhance growth rates and intensify leaf coloration. Injecting CO2 can lead to healthier, more robust plants, particularly in densely planted tanks.

• Fertilization: Use a complete aquatic fertilizer that includes macro and micronutrients. Liquid fertilizers or root tabs can supplement nutrient levels, ensuring that the plant receives all the essential elements necessary for thriving.

Natural Biomes

Alternanthera cardinalis is primarily found in several biodiverse ecosystems, including:

• Amazon Basin
• Orinoco
• Mekong Delta

These biomes feature a variety of conditions that mirror those found in home aquascapes, allowing this plant to thrive in similar environments.

Livestock Compatibility

When selecting companions for your aquascape featuring Alternanthera cardinalis, consider adding peaceful fish and invertebrates that benefit from the cover and structure it provides. Ideal tank mates include:

• Fish: Neon Tetras, Guppies, and Corydoras Catfish are all known to coexist harmoniously while adding movement and color to the aquarium.

• Shrimp: Cherry Shrimp and Amano Shrimp are excellent choices, thriving alongside Alternanthera cardinalis while also aiding in tank maintenance through algae consumption.

By understanding the specific care requirements and compatibility of Alternanthera cardinalis, aquarists can create stunning aquatic landscapes that showcase this remarkable plant's beauty and functionality.