 | Allium karataviense
'Ivory Queen'
Alpine Allium | Herbaceous Flowers, Ground cover, Spikey | White flowers (Summer early), Blue foliage |
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 | Beschorneria yuccoides
Beschorneria | Herbaceous Flowers, Container-friendly, Spikey | White flowers (Summer), Blue foliage |
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 | Eryngium bourgatii
Sea Holly, Eryngium | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer), Blue foliage |
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 | Eryngium giganteum
'Silver Ghost'
Sea Holly, Eryngium | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer), Blue foliage |
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 | Eryngium bougatti
'Picos Blue'
Eryngium | Herbaceous Flowers, Upright - Clump | Blue-silver flowers (Summer), Blue foliage |
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 | Eryngium giganteum
Eryngium | Herbaceous Flowers, Container-friendly, Spikey | Blue-silver flowers (Summer), Blue foliage |
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 | Nepeta x faassenii
Catmint, Nepeta | Herbaceous Flowers, Herbs, Ground cover, Culinary, Spreading arching | Light blue flowers (Summer early, scented), Blue foliage |
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 | Nepeta x faassenii
'Six Hills Giant'
Catmint, Nepeta | Herbaceous Flowers, Herbs, Culinary, Container-friendly, Spreading | Light blue flowers (Summer, scented), Blue foliage |
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 | Hosta halcyon
Plantain Lily | Herbaceous Flowers, Ground cover, Container-friendly, Rounded - Clump | White flowers (Summer early), Blue foliage |
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 | Hosta seiboldiana
'Francis Williams'
Plantain Lily | Herbaceous Flowers, Ground cover, Container-friendly, Rounded - Clump | Dark blue flowers (Summer), Blue foliage |
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