Lobelia x speciosa
Lobelia
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Lobelia (Lobelia x speciosa) - Description
Lobelia is a broad genus of many types of flowering herbs.
Lobelia (Lobelia x speciosa) - 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.
Lobelia (Lobelia x speciosa) - 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.
Lobelia (Lobelia x speciosa) - 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.
Lobelia (Lobelia x speciosa) - Pest
Slugs. Lobelia is also prone to leaf spots, rust, and smut.
Lobelia (Lobelia x speciosa) - Interesting facts
Lobelia produce milky sap which may aggravate the skin upon contact. Species are found in tropical and temperate regions across the globe.
Lobelia (Lobelia x speciosa) - Soil and irrigation
Rich, constantly moist soil. Marshy spots or along streams or ponds work well. Aquatic species prefer acidic soil.
