 | Eryngium giganteum | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer) | Grey-Blue foliage |
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 | Eryngium x oliverianum
Sea Holly | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer) | Grey-Blue foliage |
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 | Eryngium bougatti
'Picos Blue' | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer) | Grey-Blue foliage |
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 | Eryngium planum
'Blackappe | Herbaceous Flowers, Container-friendly, | Blue flowers (Summer) | Grey foliage |
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 | Eryngium exemum | Herbaceous Flowers, Container-friendly, Spikey | Blue flowers (Summer) | Grey-Blue foliage |
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 | Eryngium tricuspidatum
Sea Holly | Herbaceous Flowers, Container-friendly, Upright - Clump | Blue flowers (Summer) | Grey-Silver foliage |
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 | Eryngium tripartitum | Herbaceous Flowers, Container-friendly, Upright - Clump | Blue flowers (Summer) | Grey-Silver foliage |
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