We recommend Achillea x 'Moonshine' (Yarrow) as one of the best garden perennials currently available. It can be used in both drought-resistant (xeric) gardens and perennial borders that receive an average amount of rain, as it is highly adaptable in its soil and water needs. Moonshine Yarrow's distinctive silver-gray foliage is a fine backdrop for the lemon-yellow flower clusters that keep coming all summer, as long as you deadhead. This is a well-behaved variety. It is sterile, meaning it won't reseed and spread. For maintenance, just cut back in spring. Salt tolerant. Cutting propagated. 18" tall x 24" wide.