Astilbes add color and texture to shade and woodland gardens. These low-maintenance perennials are available in several flower colors, including white, pink and red hues. The feathery flower plumes add movement and color to the garden—and also make showy cut flowers. The fernlike foliage stays attractive for months. They're excellent for planting with other shade perennials, including hostas and ferns—and deer tend to pass them by. Astilbe plants can also be planted in containers. When buying astilbe for sale online, some factors to consider are their mature height and spread, flower color and bloom time.