Set plants 12 to 15 inches apart. Choose a soil that’s fertile and well-drained, but moisture-retentive. In the cooler regions of the north, full sun is fine — so long as plants receive ample moisture. Farther south, partial shade is preferred.
Water well during periods of drought. If foliage becomes unattractive by summer cut it back to ground level; it will regrow in a very short period of time to continue its delicate display until frost.
Zones 3 to 9