The Blue Sea Holly, 'Eryngium alpinum', display thistle-like steely-blue flowers with pincushion centers that are unique and extremely long lasting. Its holly-like foliage also has a blue hue, gray markings, and blue stems. It makes a great border plant. This unique foliage complements its lacy flowers. Attractive to butterflies, and when given full sun and any well-drained soil, it will flourish for years, growing upright. Can be used as cut or dried flowers.

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