Achillea millefolium 'Firefly Diamond' (Yarrow) is a spreading perennial boasting a profusion of ivory-white flower clusters from early to late summer. Borne on tall, sturdy stems, the blossoms remain attractive as they age and contrast nicely with the dark green, fern-like foliage. Attractive to bees and butterflies, easy care, drought and heat tolerant, deer and rabbit resistant, this eye-catching yarrow is perfect for hot, dry, and sunny borders, outstanding in containers, and excellent…