Scabiosa. Such an awful name for such a pretty little flower. The common name, pincushion flower, is far more descriptive. The button like flowers are held high above the plant on sturdy stems. There is a variety called 'Butterfly Blue' that is very pretty too, but not so hardy as 'Pink Mist'. However none of the Scabiosa are particularly long-lived and may need replacing after a few seasons.
Deadheading keeps the plants blooming and it's very easy to do because of the long flower stalks.
Scabiosa columbaria (Pincushion Flower) 'Pink Mist' (USDA Zones 3 - 9, 24" x 18", Pink Blooms: Repeat Bloomer) Tends to be sort lived.
- Dalea purpureum - Purple Prairie Clover (USDA Zones 3 - 9, 18" x 18" Re-Violet Blooms: Repeat Bloomer) A legume, tolerant of most soil.
- Achillea 'Appleblossom' (USDA Zones 3 - 9, 24" x 18", Soft Pink Blooms: Repeat Bloomer)