The new and distinct Yarrow, Achillea plant named ‘；Sassy Summer Silver’；, with narrow, silvery, fern-like foliage with moderately dissected lobules； tall, stiff, heavily branched peduncles with bright, golden yellow inflorescences, beginning in mid to late June and continuing for about six weeks. The new plant is useful for landscaping, as a specimen or en masse and as a cut flower.
