Starter plant in 2 and a half inch pot of Centaurea montana Amethyst in Snow. Blossoms of this perennial are not the usual blue instead, they are a striking silky white with bright purple centers. Great bed and border plant and is easy to divide in the fall if needed. Growing 12-30 inches tall and 24-36 inches wide in dry to moderately moist to dry well-drained soil. This perennial is hardy in zones 3-9