Dynamic is a rare adjective to apply to a plant, but it’s the best we can think of to describe Eryngium. From its leathery lobed leaves to the spiny, decorative bracts that host the flower, the Sea Holly has a sense of movement that is up and out. Excellent in fresh or dried arrangements, the flowers are borne on tall, branching stems, and the terminal blooms hold their color while lateral flowers develop, until the entire stem is covered with mature blossoms.
Eryngiums love well drained soil in the open sun, and are an arresting addition to the mixed border, especially when planted amidst Rudbeckia, the Achilleas, and grasses.
With silvered, narrow spiky ruffs that cradle metallic blue round flower heads, ‘Blaukappe’ makes a sterling addition to dried or fresh bouquets. The vividly colored “blue caps” crest stiff-branched, sturdy bluish stems arising from a handsome green basal rosette of coarsely toothed, rounded and leathery foliage. Let its fantastic mercury-hued accents temper the bronzed blades of Stipa arundinacea.
Size: 2' 0" – 2-1/4' high x 18" wide.
Hardy to zone 4.
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Other selections in this genus:
- Eryngium alpinum
- Eryngium amethystinum
- Eryngium ‘Big Blue’
- Eryngium bourgatii
- Eryngium planum ‘Blue Glitter’
- Eryngium planum ‘Blue Hobbit’
- Eryngium planum ‘Silver Salentino’
- Eryngium planum ‘White Glitter’
- Eryngium proteiflorum
- Eryngium ‘Sapphire Blue’
- Eryngium variifolium
- Eryngium yuccifolium
- Eryngium x zabelii ‘Jos Eijking’