Eryngium planum
Sun
12″ height
8″ width
Upright habit

To keep your sea holly looking its best, here are some guidelines for care:
Water regularly (allow the top couple inches of soil to dry between waterings)
Fertilize once a month (easiest with a water soluble fertilizer or a granular slow release fertilizer)
Long lasting flowers

Hardiness zone 4a – 8b