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Nepeta x faassenii 'Purrsian Blue'

Purrsian Blue Catmint

Perovskia atriplicifolia 'Blue Steel'

Blue Steel Russian Sage

Perovskia atriplicifolia ‘Denim ‘N Lace’

Denim 'N Lace Russian Sage

Pulmonaria 'High Contrast'

High Contrast Lungwort

Pulmonaria 'Trevi Fountain'

Trevi Fountain Lungwort

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

Sisyrinchium angustifolium 'Lucerne'

Lucerne Blue-Eyed Grass

Stokesia laevis 'Peachie's Pick'

Peachie's Pick Stoke's Aster

Veronica peduncularis 'Georgia Blue'

Georgia Blue Speedwell

Veronica x 'Sunny Border Blue'

Sunny Border Blue Speedwell

Vinca minor 'Bowles'

Bowles Periwinkle

Vitex agnus-castus 'SMVACBD'

Árbol casto azul Diddley®

Vitex agnus-castus 'SMVACBD'

Blue Diddley® Chaste Tree