Astilbe (S, F)
Hardy in Zones 4-8, Zone 3 with protection
Astilbes require moist, organic, slightly acid soil and partial shade although they will tolerate more sun if there is ample moisture. Mulch in summer and incorporate organic matter into the soil. Cover the crown, including emerging shoots, with about 1/2" of soil and space at least 1' apart. Dig and divide every 3-4 years in early spring or fall. The varieties we offer will flower in late spring to early summer. Zones 4-8. Zone 3 with protection.