Blau

Eryngium planum 'Blue Hobbit'

Eryngium planum

Eryngium variifolium

Eryngium variifolium 'Miss Marble'

Festuca glauca 'Cool as Ice'

Festuca glauca 'Blaufuchs'

Festuca glauca 'Blauglut'

Festuca glauca 'Elijah Blue'

Festuca glauca

Festuca glauca 'Uchte'

Festuca glauca 'Hoggar'

Gentiana acaulis

Geranium 'Alan Mayes'

Geranium 'Blue Blood'

Geranium pratense 'Boom Chocolatta'

Geranium 'Brookside'

Gentiana 'Blue Star'

Geranium 'Blue Sunrise'

Geranium 'Femme Fatale'

Geranium himalayense 'Baby Blue'

Geranium himalayense 'Gravetye'

Geranium himalayense 'Irish Blue'

Geranium himalayense

Geranium ibericum

Geranium ibericum subsp. jubatum

Geranium ibericum 'Vital'

Geranium 'Johnson's Blue'

Geranium 'Lakwijk Star'

Geranium magnificum 'Anemoniflorum'

Geranium 'Mary-Anne'

Geranium magnificum 'Ernst Pagels'

Geranium magnificum 'Rosemoor'

Geranium magnificum 'Turco'

Geranium 'Nimbus'

Geranium 'Orion'

Geranium phaeum 'Margaret Wilson'

Geranium 'Rozanne'

Geranium 'Sabani Blue'

Geranium sylvaticum 'Mayflower'

Geranium 'Terre Franche'

Geranium wallichianum 'Bloom Me Away'

Geranium wlassovianum 'Typ Crug Farm'

Globularia trichosantha

Hepatica nobilis

Helictotrichon sempervirens 'Saphirsprudel

Hosta 'Powder Blue'

Hyssopus officinalis subsp. aristatus

Iris bulleyana

Iris germanica 'City Lights'

Iris ensata

Iris foetidissima 'Fructo-Alba'

Iris 'Black Gamecock'

Iris laevigata 'Schwarzer See'

Iris germanica 'Miss Indiana'

Iris sibirica 'Annick'

Iris sibirica 'Aquarius'

Iris sibirica 'Blue King'

Iris sibirica 'Concord Crush'

Iris sibirica 'Ego'

Iris sibirica 'Fran's Gold'

Iris sibirica 'Himmel von Komi'

Iris sibirica 'Kabluey'

Iris sibirica 'Kaboom'

Iris sibirica 'Persimmon'

Iris sibirica 'Rosy Bows'

Iris sibirica 'Reprise'

Iris sibirica 'Ruffled Velvet'

Iris sibirica 'Silver Edge'

Iris sibirica 'Tipped in Blue'

Iris pumila 'Truly'

Iris tetrasibtosa 'Three Quarters'

Iris versicolor

Isodon shikokianus

Kalimeris incisa 'Blue Star'

Kalimeris incisa 'Madiva'

Lavandula angustifolia 'Dwarf Blue'

Lavandula angustifolia 'Essence Purple'

Lavandula angustifolia 'Hidcote'

Lavandula angustifolia 'Melissa Lilac'

Lavandula angustifolia 'Munstead'

Lavandula angustifolia 'Twickel Purple'

Leymus arenarius 'Blue Dune'

Linum perenne 'Saphir'

Lobelia siphilitica

Meehania urtidifolia 'Japanblau'

Meehania urticifolia

Nepeta 'Cat's Pajamas'

Nepeta faassenii

Nepeta faassenii 'Blue Wonder'

Nepeta faassenii 'Dropmore'

Nepeta faassenii 'Grol'

Nepeta faassenii 'Hill Grounds'

Nepeta faassenii 'Kit Cat'

Nepeta racemosa 'Little Titch'

Nepeta faassenii 'Six Hills Giant'

Nepeta faassenii 'Walker's Low'

Nepeta 'Joanna Reed'

Nepeta kubanica

Nepeta manchuriensis 'Manchu Blue'

Nepeta nervosa 'Neptune'