Just when the garden's looking tired in midsummer, cardinal flower (grown here from Rhode Island seed) revs things up with its brilliant 3-foot spikes, drawing every hummingbird in the vicinity. It loves light shade and moist soil.
Full to part sun; damp to average soil; 3'x1'; summer; RI native; Zone 3
Propagated from seed; deep 3.5-inch pots
Photo: FritzFlohrReynolds, licensed under CC BY-SA 2.0.