Big Blue Sea Holly is a sturdy upright herbaceous perennial with thick stems and almost metallic silvery green toothed foliage. The stems are topped by violet blue flower heads with thorny brackets in early to mid summer, with the blue spreading down to the upper stem and leaves as the flower matures. Grows best in full sun with dry, fast-draining soils. Drought and salt tolerant once established.
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Type:
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Perennial
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Height:
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2' - 2.5'
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Spread:
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2' - 2.5’
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Spacing:
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2’
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USDA Hardiness Zone:
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5 - 8
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Culture:
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Full Sun
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Bloom Color:
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Blue
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Season of Interest:
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Summer
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MAINTENANCE NEEDS: Low Maintenance. Rich or moist soils will cause the stems to flop and require staking. No serious pests or diseases.
LANDSCAPE USES: Accents or Group Plantings, Borders, Woodland Garden, Rock Gardens, Groundcover, and Containers.
COMPANION PLANTS: Sedge, Tickseed, Indian Grass
IMAGES: Prides Corner, Eryngium x zabelii 'Big Blue'
*As plants have ranges in appearance they may not appear as the images shown.
