A vigorous growing, very showy perennial with tube-shaped, bell-like flowers that are up to 3 inches long, in a dark blue color. Plants flower in early summer and produces tall, upright flowering stems from 3 to 5 feet tall, clumps grow too about 2 feet wide in three or four years. Does best in part shade in good soil but will take full sun in moisture retentive soils. Mixes well with the larger Astilbe and Aruncus. Easy to grow. The difference between the typical species and this selection is that these plants have sparse foliage, allowing the very large dark blue-purple bell flowers to stand out. Makes a showy display in bright open shade or under the edges of a tree line.
Native to the Caucus Maintains. Sow at 70ºF, germination starts in one to three weeks. Cover with glass or plastic. If seeds have not germinated well after four weeks- move to the refrigerator (32-39F) for three weeks then back 70 F. or sown in early spring and keep outside during cool weather for germination when the soil warms up.