Hosta ventricosa

Hosta ventricosa

Blue Hosta, Blue Plantain Lily, Hosta

Plantago lanceolata

Plantago lanceolata

Narrowleaf Plantain, Ribwort Plantain

Hosta venusta

Hosta venusta

Plantain Lily

Lilium superbum

Lilium superbum

Swamp Lily, Turk's Cap Lily, Turk's-cap Lily

Belamcanda chinensis

Belamcanda chinensis

Blackberry Lily, Blackberry-lily, Leopard flower, Leopard Lily

Eremurus robustus

Eremurus robustus

Desert Candle, Foxtail Lily

Xerophyllum tenax

Xerophyllum tenax

Bear Grass, Bear Lily, Elk Grass, Indian Basket Grass, quip-quip, Soap Grass, Squaw Grass, Western Turkeybeard

Liriope muscari

Liriope muscari db

Big Blue Lilyturf, Lilyturf

Lilium distichum

Lilium distichum

Manchurian Turk's Cap Lily

Lilium pensylvanicum

Lilium pensylvanicum

Candlestick Lily

Iris versicolor

Iris versicolor

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

Baptisia australis

Baptisia australis

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

Ipomoea tricolor

Ipomoea tricolor Heavenly Blue

'Heavenly Blue'

Heavenly Blue Morning Glory

Lobelia siphilitica

Lobelia siphilitica

Blue Cardinal Flower, Great Blue Lobelia

Ageratum houstonianum

Ageratum houstonianum dwarf Blue Mink

'Blue Mink'

Flossflower, Garden Ageratum

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, Bog Lupine, Common Lupine , Garden Lupine, Large-leaved Lupine, Lupin, Meadow 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

Aquilegia caerulea

Aquilegia caerulea

Colorado Blue Columbine, Colorado Columbine, Rocky Mountain Columbine

Cichorium intybus

Cichorium intybus

Chicory

Eryngium planum

Eryngium planum

Blue Eryngo, Flat Sea Holly, Flat-leaved Eryngium

Festuca ovina

Festuca ovina glauca

var. glauca

Blue Fescue

Iris magnifica

Iris magnifica f. caerulea

var. f. caerulea

Blue Juno Iris

Knautia arvensis

Knautia arvensis

Blue Buttons, Field Scabiosa, Field Scabious

Lobelia siphilitica

Lobelia siphilitica Alba

var. Alba

Great White Blue Lobelia, White Cardinal Flower, White Lobelia

Poa palustris

Poa palustris

Fowl Bluegrass, Swamp Meadow-grass

Poa pratensis

Poa pratensis

Kentucky Blue-grass , Kentucky Bluegrass, Smooth Meadow-Grass