Although the plant is perennial, it does not produce tubers or rhizomes, but sends out basal offshoots. The blooming period usually begins in July and often lasts until early October. Distribution Lobelia cardinalis can be found in wetlands throughout Virginia and much of eastern United States. Habitat Cardinal flower is commonly found in freshwater wetlands such as marshes, swamps, bogs, along streams and ditches. It is seldom abundant in the Mid-Atlantic region, but can become very abundant farther south, to the point of choking waterways.
Plants appear to be more robust in open marshes.
The brilliant scarlet flower of this tall herb is its greatest value. Hummingbirds are attracted to this plant.