Centaurea scabiosa alpestris
The Centaurea scabiosa alpestris (Alps-Greater knapweed) is perennial, belongs to the Asteraceae family and is a stone garden, wildflower plant. The flowers are purple, blue and the leaves green. The herbaceous perennial plant will be up to 70 cm (27.5 in) high. The soil conditions should be dry, well-drained and the plant area sunny.