Lobelia cardinalis, commonly known as the Cardinal Flower, is a striking aquatic plant native to North America. Here’s a detailed overview of its characteristics, cultivation requirements, and planting instructions.

Origin

Lobelia cardinalis is indigenous to a broad region that includes southeastern Canada and the eastern and central United States, extending down to northern South America. It thrives in various habitats such as stream banks, wetlands, and meadows156.

Light Conditions

This plant prefers full sun to partial shade. While it can tolerate some shade, optimal growth occurs in bright light conditions. Adequate sunlight is crucial for promoting vibrant flower production and healthy foliage24.

Water Conditions

Lobelia cardinalis thrives in moist to wet environments. It can grow in water conditions with a pH range of 6.0 to 7.5 and prefers temperatures between 60°F to 75°F (15°C to 24°C). This plant is often found in shallow waters or areas that are consistently damp, making it suitable for garden ponds and aquariums345.

How to Plant

When planting Lobelia cardinalis, follow these steps:

1. Select a Location: Choose a spot that receives full sun or partial shade and has moist soil or shallow water.
2. Soil Preparation: If planting in soil, ensure it is rich in organic matter and retains moisture. For aquatic settings, use aquatic planting media.
3. Planting Depth: If planting in water, position the plant so that the crown (where the roots meet the stem) is just above the water surface or at a depth of up to 12 inches.
4. Spacing: Space plants about 12-18 inches apart to allow for their growth and spread.
5. Watering: Keep the soil consistently moist if planted in terrestrial conditions or ensure that the water level remains stable if planted in aquatic environments.
6. Maintenance: Regularly check for pests and ensure that the plant receives adequate sunlight for optimal growth234.

• By following these guidelines, you can successfully cultivate Lobelia cardinalis, enjoying its beautiful red flowers that attract hummingbirds and enhance your garden or aquatic setup.