The bell-shaped vermilion flowers of cardinal-flower (Lobelia cardinalis, a.k.a. red lobelia) are perfectly adapted to be pollinated by hummingbirds. Flower spikes reach three to six feet in height and bloom from bottom to top over a period of several weeks. Flowering in midsummer, cardinal-flower makes a dramatic addition to the native plant garden, and like its blue-flowering counterpart, Lobelia siphilitica, it often self-seeds to gift the gardener with new plants the next season. As this vid