Ohio
State University Plant Dictionary

Scientific Name:
Artemisia x 'Powis Castle'
Family:
Powis Castle Artemisia
Family:
Asteraceae (also known as Compositae)
Description:
Powis Castle Artemisia, although marginally hardy in zone 5, is a perennial of great foliage beauty, having lacy, silver-green leaves in a shrub-like canopy. This perennial should not be pruned all the way back to the ground in late Winter, leaving a significant proportion of its woody stems to initiate the following season's growth.Black & White version for printing