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Eryngium planum 'Blue Hobbit'

Blue Hobbit Sea Holly

Hortensia macrophylla 'Ramars'

Cityline® Mars Hydrangea

Iris sibirica 'Royal Blue'

Royal Blue Siberian Iris

Iris versicolor

Northern Blue Flag Iris, Harlequin Blue Flag

Nepeta 'Balneplud

Blue Prelude Catmint

Nepeta grandiflora 'Summer Magic'

Summer Magic Catmint

Nepeta racemosa 'Blue Wonder'

Blue Wonder Catmint

Nepeta racemosa 'Little Titch'

Little Titch Catmint

Perovskia atriplicifolia 'Blue Steel'

Blue Steel Russian Sage

Perovskia atriplicifolia ‘Denim ‘N Lace’

Denim 'N Lace Russian Sage

Salvia lyrata 'Purple Knockout'

Purple Knockout Lyre-Leaf Sage

Salvia nemorosa 'Blue By You'

Blue By You Meadow Sage

Salvia nemorosa 'Blue Hill'

Blue Hill Meadow Sage

Salvia nemorosa ‘Perfect Profusion’

Perfect Profusion Meadow Sage

Veronica peduncularis 'Georgia Blue'

Georgia Blue Speedwell

Veronica x 'Sunny Border Blue'

Sunny Border Blue Speedwell