Lobelia cardinalis (Cardinal Flower)
Cardinal Flower, Water Gladiole, Red Bay, Scarlet Lobelia, Slinkweed, Bog Sage, Hog's Physic, Indian Pink, Lobelia fulgens, Lobelia splendensLobelia ‘Cardinal Red’, botanically known as Lobelia cardinalis, is a striking herbaceous perennial admired for its vibrant scarlet-red flower spikes. Commonly referred to as Cardinal Flower, this plant is native to North America and thrives in moist environments such as wetlands, stream banks, and rain gardens. Its tall, unbranched stems can reach heights of 2–4 feet, adorned with tubular flowers that bloom from mid-summer to early fall. These vivid blooms attract hummingbirds, butterflies, and other pollinators, making it a valuable addition to wildlife-friendly gardens. The lance-shaped, dark green foliage provides a lush backdrop to the brilliant flowers, enhancing its visual appeal.
This perennial is well-suited for areas with consistently moist or wet soil, as it thrives in rich, slightly acidic to neutral conditions. It performs best in full sun to partial shade, with afternoon shade preferred in hotter climates. Lobelia ‘Cardinal Red’ is a clump-forming plant that self-seeds and spreads through offshoots, ensuring its longevity in the garden. Its ability to tolerate brief flooding makes it an excellent choice for water gardens or low-lying areas prone to seasonal wetness. Additionally, it is deer-resistant and virtually pest-free, requiring minimal maintenance.
Care Instructions
- Light: Prefers full sun in cooler climates but benefits from partial shade in warmer regions.
- Soil: Thrives in moist, rich, and well-drained soil with a slightly acidic to neutral pH.
- Watering: Keep soil consistently moist; water regularly during dry periods to prevent wilting.
- Fertilizing: Apply a balanced fertilizer in early spring to promote healthy growth and flowering.
- Pruning: Deadhead spent flowers to encourage prolonged blooming. Cut back stems in late fall to prepare for winter.
Lobelia ‘Cardinal Red’ is a showstopper in any garden, offering both beauty and ecological benefits. Its vibrant flowers and adaptability to wet conditions make it ideal for rain gardens, borders, or naturalized settings. Whether planted as a focal point or in mass groupings, this perennial adds a bold splash of color and attracts beneficial pollinators to your outdoor space.
