With a soft palette of pastel-colored flowers, Achillea millefolium 'Summer Pastels' is a stunning Yarrow with masses of long-lasting flower clusters, up to 8" (20cm) wide, in glorious shades of red, pink, yellow, orange, salmon, lilac, purple, and white. Flowers range from 2 to 5 inches across, growing on 20- to 24-inch stems atop 30-inch plants with feathery, deep-green foliage. Ideal for cutting gardens and softening border plantings, Yarrow is a staple in pollinator gardens, attracting…