Native Range: Unusual variety A. simplex
Hardiness Zone: USDA Zone 4a: to -34.4 °C
Soil: Humus rich soils.
Moisture: Needs to be kept moist. Do not allow to fully dry out.
Light: While it can take shade, give it full sun with lots of water in most states for the darkest foliage.
Flowering Period: August, September, and October
Garden locations: Adds architectural height and late summer bloom to a shaded part of the border or shade garden. Also effective in woodland gardens, cottage gardens and naturalized areas. Best in groups, although single plants have good specimen value once established. White flower spires are generally more demonstrative in front of darker backgrounds. Bronze-purple foliage provides excellent texture and color to the landscape throughout the growing season.