Iris versicolor

Iris versicolor

Blue Flag, Harlequin Blueflag, Larger Blueflag, Northern Blue Flag

Iris missouriensis

Iris missouriensis

Rocky Mountain Iris, Western Blue Flag, Wild Blue Iris

Aquilegia caerulea

Aquilegia caerulea

Colorado Blue Columbine, Colorado Columbine, Rocky Mountain Columbine

Trifolium repens

Trifolium repens

Dutch Clover, Irish Shamrock, True Irish Shamrock, White Clover

Baptisia australis

Baptisia australis

Blue False Indigo, Blue Wild Indigo, Horse Fly Weed, Indigo Weed, Rattlebush, Rattleweed

Agastache foeniculum

Agastache foeniculum

Anise Hyssop, Blue Giant Hyssop, Lavender Hyssop

Centaurea montana

Centaurea montana Mountain Blue

'Mountain Blue'

Mountain Bluet, Perennial Cornflower

Lupinus polyphyllus

Lupinus polyphyllus

Big-leaved Lupine, Bigleaf Lupine, Blue Bonnet, Blue-pod Lupine, Large-leaved Lupine

Verbena hastata

Verbena hastata

American Vervain, Blue Vervain, False Vervain, Indian Hyssop, Swamp Verbena, Swamp Vervain, Vervain, Wild Hyssop

Viola sororia

Viola sororia

Butterfly Violet, Common Blue Violet

Aconitum napellus

Aconitum napellus

Monk's Hood, Monk's-hood , Venus' Chariot

Cichorium intybus

Cichorium intybus

Chicory

Eryngium planum

Eryngium planum

Blue Eryngo, Flat Sea Holly, Flat-leaved Eryngium