Zona 4

Aster cordifolius

Blue Wood Aster

Aster laevis

Smooth Aster

Aster oblongifolius 'Raydon's Favorite'

Raydon's Favorite Aromatic Aster

Aster tataricus 'Jindai'

Jindai Tatarian Aster

Baptisia 'Blueberry Sundae'

Decadence® Blueberry Sundae False Indigo

Brunnera macrophylla ‘Jack of Diamonds’

Jack of Diamonds Heartleaf Brunnera

Brunnera macrophylla 'Sea Heart'

Sea Heart Siberian Bugloss

Brunnera macrophylla 'Silver Heart'

Silver Heart Siberian Bugloss

Clematis 'Ramona'

Ramona Clematis

Delphinium 'M.F. Dark Blue Dark Bee'

Magic Fountain Dark Blue/Dark Bee Delphinium

Delphinium (Pacific Hybrids)

Pacific Hybrids Mix Delophinium, Larkspur

Eryngium planum 'Blue Hobbit'

Blue Hobbit Sea Holly

Hortensia macrophylla 'Grenan'

Hortensia Nantucket Blue™

Hortensia macrophylla 'Ramars'

Cityline® Mars Hydrangea

Iris versicolor

Northern Blue Flag Iris, Harlequin Blue Flag

Nepeta grandiflora 'Summer Magic'

Summer Magic Catmint

Nepeta kubanica 'Bokratune'

Neptune Catmint

Nepeta racemosa 'Little Titch'

Little Titch Catmint

Nepeta x faassenii 'Purrsian Blue'

Purrsian Blue Catmint

Perovskia atriplicifolia ‘Denim ‘N Lace’

Denim 'N Lace Russian Sage