If plants become too woody one will have to replace them with new ones. Heucheras grow easily from seed, while named cultivars are propagated vegetatively, autumn or spring. There are many examples of hybrids between species within a genus, but relatively few between genera. X Heucherella is a hybrid genus resulting from crosses between Heuchera and Tiarella . The genus was produced in 1912 at Nancy in France between a Heuchera hybrid and Tiarella cordifolia .
Plants are evergreen, mat or clump-forming, occasionally stoloniferous perennials.
They bear heart-shaped or broadly ovate, lobed, boldly veined, sometimes hairy leaves that are shaded brown when young and turning reddish brown in autumn. Short, loose panicles of tubular, bell-shaped, pink or white flowers are borne over an extended period from spring to autumn. They are excellent as a ground cover edging in a herbaceous mixed bed or border or shrub bed or woodland garden. Plants are easily propagated by division, but do not set seed. These hybrids then blend the characters of the parents and require similar growing conditions as Heuchera , but they are more shade tolerant, although they grow best in a slightly lighter, well-drained soil.