Artemesia Powis Castle 08-01-2019DianeComments are closed A first class grey foliage plant with finely cut silver leaves. Use as foliage to to separate bright colours in the garden and to harmonise with pastels. Prune to half its height at the end of autumn to ensure fresh foliage the following season. Category: Perennials and Cottage Related products Arctotis Red Arctotis Yellow Achillea Red Velvet Ajuga Pink Elf