Still one of the most popular garden plants today, A. 'Moonshine' is valuable in the landscape because it combines well with almost everything. It is a terrific foil for many other colors including purple, blue, and pink. Its flat-topped, canary yellow flower clusters and bright silver foliage light up the garden.

This is a clump-forming selection that blooms over a long period beginning in early summer. Plants will rebloom if they are cut back after the first round of flowering.