Centaurea montana. Cornflower, Mountain Bluet, Bachelor’s Buttons.

Centaurea montana: Star shaped deep blue flowers in mid-spring. Will grow in sun or partial shade. Can spread easily, so keeping it contained is in order. Some consider it a weed, but it is a very pretty weed.
Amethyst in Snow: striking white petals with a rich purple centre atop silvery-green foliage.

Spring bloom