Numerous varieties are available. Foliage color varies from dark green to reddish green. Flowers are produced on erect or arching stems. Flower colors include white, pink, red, and lavender. Astilbe varieties range in height from 6 to 8 inches up to 3 to 4 feet.
Astilbes perform best in moist, well-drained soils.
In hot, dry locations, astilbe foliage often turns brown and dies prematurely. The common name refers to the purported value of the leaves in the treatment of lung diseases. The foliage of most species and varieties is green with white or silver spots. However, some of the newer varieties have essentially silver leaves with green margins. In addition to the spotted foliage, lungworts also produce attractive flowers in spring.