Eryngium
Sea Holly
From its leathery lobed leaves to the spiny decorative bracts that host the flower, the dynamic 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 sharp-draining soil in the open sun, and are an arresting addition to the mixed border, especially when planted amidst Rudbeckia, Achillea and grasses.
Eryngium amethystinum (P-1166)
Each 10.75
This cold-hardy species yields up-curving bracts that are long spiny slivers of silver plus thistle-like metallic-blue blossoms, surmounting branched stems that are tinted blue on their upper extremities. Marked with a smattering of mercury-hued speckles and white veining, deeply cut, gray-green leaves make a low-lying rosette for the unique floral phenomenon.
Blooms July–September
Size: 2' 0" high x 18" wide.
Hardy to zone 4.
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Other selections in this genus:
- Eryngium agavifolium
- Eryngium alpinum
- Eryngium ‘Big Blue’
- Eryngium ‘Blue Jackpot’
- Eryngium bourgatii
- Eryngium giganteum
- Eryngium planum ‘Blaukappe’
- 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 ‘Donard Variety’
- Eryngium x zabelii ‘Jos Eijking’
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