Gentiane sans Tige
A North American native, gentian bears showy clusters of blossoms at the top of the plant in shades of white, purple, and sometimes nearly blue. The tubular flowers, which resemble large, closed buds, debut in midsummer and continue coloring the garden through autumn. Gentian is pollinated by insects, such as bumblebees, that push their way into those tight buds. In its native environment this wildflower grows well in moist woodland areas near ponds and streams.