Achillea ‘Moonshine’ (yarrow ‘Moonshine’)

Allium atropurpureum (ornamental onion)

Allium caesium (light blue garlic)

Allium carinatum subsp. pulchellum (keeled garlic)

allium lusitanicum ‘Summer Beauty’ (allium ‘Summer Beauty’)

Amsonia ‘Blue Ice’ (blue star ‘Blue Ice’)

Amsonia hubrichtii (threadleaf blue star)

Amsonia tabernaemontana var. salicifolia (willow leaf blue star)

Anemone blanda ‘Blue Shades’ (Grecian windflower ‘Blue Shades’)

Baptisia ‘Purple Smoke’ (false indigo ‘Purple Smoke’)