Lobelia cardinalis
Cardinal Flower
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Cardinal Flower (Lobelia cardinalis) - Description
Lobelia cardinalis (syn. L. fulgens, cardinal flower) is a species of Lobelia native to the Americas, from southeastern Canada south through the eastern and southwestern United States, Mexico and Central America to northern Colombia.
Cardinal Flower (Lobelia cardinalis) - Blooming
All have tubular flowers that are slit almost to the base to form two lips. The top lip has two lobes and the bottom one three. Flowers are single or in erect racemes or panicles in shades of blue to red to white to yellow. To enhance flowering, implement a balanced liquid fertilizer biweekly between spring and early summer. From there, apply a nitrogen-free fertilizer biweekly til the end of the growing season.
Cardinal Flower (Lobelia cardinalis) - Growth
Diverse genus of annuals and perennials, and shrubs, treelike plants, and aquatic species. The tallest can reach 30 feet. The most common are 2-4 feet. All have simple leaves. The plants are short-lived, but will self-sow in favorable sites. Grows best in full sun or partial shade.
Cardinal Flower (Lobelia cardinalis) - Planting
Sow seeds of annuals in late winter; sow perennials when seeds are ripe. Propagate aquatic species by division in summer. Divide border perennials in spring.
Cardinal Flower (Lobelia cardinalis) - Pest
Slugs. Lobelia is also prone to leaf spots, rust, and smut.
Cardinal Flower (Lobelia cardinalis) - Interesting facts
Lobelia produce milky sap which may aggravate the skin upon contact. Species are found in tropical and temperate regions across the globe.
Cardinal Flower (Lobelia cardinalis) - Soil and irrigation
Rich, constantly moist soil. Marshy spots or along streams or ponds work well. Aquatic species prefer acidic soil.
