Lobelia siphilitica
Common Names: the great blue lobelia, great lobelia, or blue cardinal flower
Plant Characteristics
1.2 m tall
Great lobelia flowers are notably larger than many other lobelia species. Flowers are typically blue or violet, but can be lighter, even white and are usually about 25 mm long
It thrives in moist to wet soils and partially shaded environments, including swamp forests, roadside ditches, floodplains, lake margins, and wet prairies.