Achillea can be mat-forming or upright perennials, mostly herbaceous, with sometimes aromatic, pinnately divided or simple and toothed leaves and flattened clusters of small, daisy-like flower-heads
'King Edward' is a compact, spreading perennial to 10cm in height, with narrow, silvery-grey leaves which often persist through the winter. Compact heads of small, buff-yellow flowers in early summer, fading to cream with age