Prärie

Agastache foeniculum

Echinops bannaticus ‘Blue Globe’

Echinops bannaticus ‘Taplow Blue’

Catananche caerulea

Baptisia australis

Salvia nemorosa 'Blauhügel'

Salvia nemorosa ‘Blaukönigin’

Salvia nemorosa ‘Mainacht’

Salvia nemorosa ‘Ostfriesland’

Limonium latifolium

Veronica spicata

Veronica gentianoides

Veronica longifolia 'Blauriesin'

Veronica austriaca ‘Knallblau’

Verbena hastata ‘Blue Spires’

Verbena hastata ‘White Spires’

Erigeron hybride 'Azure Beauty'

Centaurea montana ‘Coerulea’

Aster frikartii 'Mönch’

Nepeta nervosa

Amsonia tabernaemontana

Sisyrinchium angustifolium

Scabiosa caucasica ‘Perfecta’

Phlox (P) ‘Blue Paradise’

Phlox (P) ‘Uspech' (=Laura')

Veronicastrum virginicum 'Lavendelturm'

Nepeta faassenii

Nepeta faassenii ‘Six Hills Giant’

Nepeta faassenii ‘Walker’s Low’

Nepeta mussinii

Gentiana septemfida 'Lagodechiana'

Calamintha nepeta subsp. Nepeta

Calamintha nepeta ‘Blue Cloud’

Stokesia laevis

Echinops ritro ‘Veitch’s Blue’

Eryngium planum