What Is the Blue Lobelia?


Quick Answer

The blue lobelia is a flowering plant with intensely blue flowers. One variety of lobelia, L. siphilitica, is called the great blue lobelia. Its blue flowers can persist for a month or more. The lobelia is also called the cardinal flower.

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What Is the Blue Lobelia?
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Full Answer

Great blue lobelia grows in soil with adequate moisture and tolerates "wet feet." It needs lots of organic matter and grows to between 2 and 3 feet high with a spread of between 1 and 1 1/2 feet. It thrives in full sun to part shade and needs little care. Flowers arrive from July until September. Lobelia is a perennial and easily self-seeds.

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