Convallaria majalis, also known as lily of the valley, looks dainty, but are tough little plants. Grown from fleshy rhizomes known as 'pips,' they produce broad, dark green leaves and fragrant, delicate bell-shaped blossoms that grow in clusters on stems that grow from 8 to 10 inches high. Since they bloom in early- to mid-spring, lily of the valley work well for naturalizing shady spots in the yard. Once they are established, they require little care.
Select a location for lily of the valley that has partial shade. Plant them under deciduous trees or in mixed beds or borders.
Plant the flowers in soil that is moisture-retentive yet well draining. Amend poor soil with large amounts of compost or well-rotted manure.
Plant the pips from October to December. Plant them 1 inch deep and 4 inches apart.
Cover the beds with 2 inches of compost, manure, mulch or decaying leaves. No other fertilizer is required for lily of the valley.
Keep the soil moist during the growing season. Water the flowers deeply once a week, but avoid watering to the point that the ground stays soggy, as this can rot the roots.
Do not cut the foliage after the lily of the valley flowers. Leave the flowers undisturbed for several years, to allow them to establish. Lift and divide crowded beds in the fall or early winter. Replant the divided sections 4 inches apart.