Set plants 12 to 15 inches apart, in well-drained, slightly acid, humus-rich soil; enrich soil if necessary with peat moss, compost, or leaf mold. Partial shade is preferred, though more sun may be tolerated in the North.
Keep plants well watered. To preserve moisture, we suggest providing a summer mulch. To increase plants, divide in spring or fall.
Zones 2-7
