Agastache foeniculum (anise hyssop)

Allium christophii (star of Persia)

Asarum canadense (wild ginger)

Asclepias syriaca (common milkweed)

Baptisia alba var. macrophylla (white false indigo)

Camassia cusickii (quamash)

Camassia leichtlinii ‘Blue Danube’ (quamash ‘Blue Danube’)

Caryopteris x clandonensis ‘Dark Knight’ (bluebeard ‘Dark Knight’)

Chionodoxa forbesii ‘Blue Giant’ (glory of the snow ‘Blue Giant’)

Echinacea purpurea ‘Green Edge’ (purple coneflower ‘Green Edge’)