Eryngium

Common name: Neptune's Gold or Sea Holly An upright perennial with yellow-green spiny brachts and electric blue flowers. Tiny flower heads appear from mid-summer which remain into winter.  Average spread 1.5ft. Full sun. Hardy.

Common name: Sea Holly Architectural perennial with spiny, mid-green leaves. Branched stems bearing clusters of lavender-blue flowers surrounded by spiny bracts, are produced from June to August. Self seeds and makes an excellent cut flower.  Average...