Dicentra cucullaria (Dutchman’s breeches)

Digitalis ferruginea (rusty foxglove)

Echinacea pallida (pale purple coneflower)

Echinacea purpurea (purple coneflower)

Echinacea simulata (wavyleaf purple coneflower)

Echinacea tennesseensis (Tennessee coneflower)

Echinops bannaticus ‘Blue Glow’ (globe thistle ‘Blue Glow’)

Echinops sphaerocephalus ‘Arctic Glow’ (globe thistle ‘Arctic Glow’)

Echinops ritro ‘Veitch’s Blue’ (globe thistle ‘Veitch’s Blue’)

Epimedium grandiflorum ‘Yubae’ (bishop’s hat ‘Yubae’)