Scabiosa caucasica

Scabiosa caucasica, the Caucasian pincushion flower, pincushion-flower or Caucasian scabious, is a species of flowering plant in the family Caprifoliaceae, native to the Caucasus, north eastern Turkey, and northern Iran. Growing to tall and broad, it is a clump-forming perennial with divided leaves. Pincushion-shaped buds, borne on erect stems, open to pale blue or lavender flower heads, in diameter, from late summer through to autumn.
The plant is highly attractive to bees and other pollinating insects.
Cultivars.
Numerous cultivars have been developed for garden use, in shades of red, purple, pink, blue and white. The cultivars 'Clive Greaves' (lavender blue) and 'Miss Willmott' (white) have gained the Royal Horticultural Society's Award of Garden Merit. 
Other cultivars include:-