Lobelia Cardinalis Gigantea

Plant Profile

• Scientific Name: Lobelia cardinalis ‘Gigantea’
• Common Name: Giant Cardinal Plant
• Origin: Native to North and Central America (found in wetlands and shallow waters)
• Height: 20–30 inches (50–75 cm)
• pH: 6.0–7.5
• Care: Moderate — requires stable water conditions, nutrient-rich substrate, and regular trimming
• Light: Moderate to high — bright light promotes healthy, vibrant red coloration
• CO₂: Recommended for optimal growth and color intensity
• Propagation: Stem cuttings — cut and replant stems; also propagates via runners
• Growth Rate: Moderate to fast

Additional Notes:

• Features tall, lance-shaped leaves that develop bright red hues under good lighting, making it a stunning midground to background plant.
• Prefers softer, slightly acidic to neutral water but is quite adaptable.
• Benefits from root tabs or nutrient-rich substrate, as well as iron supplementation to enhance red coloration.
• Requires regular pruning to maintain shape and prevent overshadowing other plants.
• It can grow emergent in paludariums or bog setups as well.