Prunella grandiflora 'Bella Blue'

Rodgersia pinnata

Salvia nemorosa 'Blaukönigin'

Salvia nemorosa 'Ostfriesland'

Salvia nemorosa SYNCHRO WHITE

Salvia x sylvestris BLUE MARVEL

Scabiosa caucasica 'Perfecta'

Thymus 'Doone Valley'

Tiarella wherryi

Tradescantia 'Karminglut'

Verbena bonariensis 'Lollipop'

Veronica spicata ANNIVERSARY BLUE

Iris ensata 'Crystal Halo'

Iris ensata 'Light at Dawn'

Iris ensata 'Queens Tiara'

Phlox 'Monica Lynden-Bell'

Phlox 'Strawberry Daiquiri'

Salvia nemorosa 'Mainacht'

Crambe cordifolia

Geranium sanguineum 'Elke'

Hemerocallis 'Awesome Luck'

Hemerocallis 'Catherine Woodbury'

Hemerocallis 'Ruby Corsage'

Iris ensata 'Loyalty'