Very good groundcover, tolerates summer drought and requires no care other than a mulch to conserve moisture. Best to plant in early spring or in fall. Moderate growth rate. Marginal in Zone 8. Spacing: 4 - 8". Mature height 6" - 10".

Convallaria majalis, commonly known as the Lily of the Valley or Lily-of-the-Valley, is the only species in the genus Convallaria in the flowering plant family Ruscaceae in older texts found in the lily family Liliaceae or placed in its own family called Convallariaceae. This woodland plant is native throughout the cool temperate Northern Hemisphere in Asia and Europe and a limited native population in Eastern USA. It is a herbaceous perennial plant that forms extensive colonies by spreading underground stems called rhizomes that send out stolons. These send up numerous stems each spring. The stems grow to 15-30 cm tall, with one or two leaves 10-25 cm long, flowering stems have two leaves and a raceme of 5-15 flowers on the stem apex. The flowers are white tepals, bell-shaped, 5-10 mm diameter, and sweetly scented; flowering is in late spring, in mild winters in early March. The fruit is a small orange-red berry 5-7 mm diameter that contains a few large whitish to brownish colored seeds that dry to a clear translucent round bead 1 to 3 mm wide. Plants are self-sterile, and colonies of one clone do not set seed.

The leaves and flowers contain cardiac glycosides including convallatoxin, that have been used in medicine for centuries. In overdose, preparations can be poisonous; pets and children can be harmed by eating Lily of the Valley. It also contains convallamarin, which has effects similar to digitalis. Medieval herbalists used it instead of foxglove.