Powis Castle is a kind of Artemisia (Artemesia) and an evergreen perennial plant. Powis Castle grows up to 90cm (3 feet) heights and 3m (10 feet) width if not properly pruned. This plant prefers to grow poor to moderately poor, dry to moderately dry and well drained soil with full sun. So Powis Castle is good for poor soil garden and almost not need to take care of this plant. Powis Castle is used for enjoying the silver-gray foliage for contracting with other green foliage plant and its strong aroma.