The flowers of some varieties are highly fragrant. Hostas can be used as a groundcover or as specimen plants. Most grow best in partial to heavy shade. However, the gold-leaved varieties develop their best color in partial to full sun. The color intensity of the blue-leaved hostas is best in heavy shade.
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.