March
Crocus Crocus
Glory of the snow Chionodoxa
Winter aconite Eranthis
Snowdrop Galanthus
Christmas rose Helleborus
Lenten rose Helleborus
Iris Iris danfordiae
Iris Iris reticulata
Striped squill Puschkinia
Squill Scilla


April
Spring Adonis Adonis
Golden garlic Allium moly
Anemone Anemone sp. & cvs.
Pasque flower Anemone pulsatilla
Columbine Aquilegia canadensis
Rock cress Arabis
False rock cress Aubrietia
Basket of gold Aurinia (Alyssum)
Bergenia Bergenia
Brunnera Brunnera
Marsh marigold Caltha
Black cohosh Caulophyllum
Spring beauty Claytonia
Dutchman's breeches Dicentra eximia
Draba Draba
Trout lily Erythronium americanum
Dogtooth violet E. Dens-canis cvs.
Crown Imperial fritillaria cvs.
Hepatica Hepatica sp.
Hyacinth Hyacinth sp.
Dwarf iris Iris pumila
Snowflake Leucojum
Virginia bluebell Mertensia
Grape hyacinth Muscari cvs.
Daffodil Narcissus cvs.
Blue-eyed Mary Omphalodes
Japanese spurge Pachysandra
Creeping phlox Phlox sp.
Ground phlox Phlox subulata
Primrose Primula sp. & cvs.
Lungwort Pulmonaria cvs.
Bloodroot Sanguinaria
Tulip Tulipa sp. and cvs.
Violet Viola sp. and cvs.

May
Stone cress Aethionema
Bugle flower Ajuga cvs.
Spring anemone Anemone sp.
Columbine Aquilegia hybrids
Thrift Armeria
Alpine aster Aster alpinus
Masterwort Astrantia major
Quamash Camassia
Bluebells Campanula poscharskyana
Corydalis Corydalis sp.
Lady's slipper Cypripedium sp.
Pinks Dianthus sp. and cvs.
Bleeding hearts Dicentra sp. and cvs.
Shooting star Dodecatheon sp.
Leopard's bane Doronicum sp.
Bluebell Endymion (Scilla)
Barrenwort Epimedium sp.
Cushion spurge Euphorbia
Sweet woodruff Galium
Cranesbill Geranium sp.
Avens Geum sp.
Candy tuft Iberis
(Early) Iris Iris intermedia
Spring vetchling Lathyrus vernus
(Early) Peony Paeonia cvs.
Fernleaf peony Paeonia tenufolia
Alpine poppy Papaver alpinus
Creeping phlox Phlox stolonifera
Jacob's ladder Polemonium
Solomon's seal Polygonatum
Primrose Primula
Buttercup Ranunculus
Wild pink Silene caroliniana
Blue-eyed grass Sisyrhinchium
False Solomon's seal Smilacina
Meadow rue Thalictrum
Foam flower Tiarella
Spiderwort Tradescantia
Globeflower Trollius
Tulip Tulipa cvs.
Bellwort Uvularia
Speedwell Veronica sp.
Violet Viola
Barren strawberry Waldsteinia

June
Yarrow Achillea
Rose campion Agrostamma (Lychnis)
Lady's mantle Alchemilla
Ornamental onion Allium sp.
Peruvian lily Alstromeria
Italian bugloss Anchusa
Pussytoes Antennaria
Golden Marguerite Anthemis
Fan columbine Aquilegia flabellata
Goat's beard Aruncus
Astilbe Astilbe hybrids
False indigo Baptisia
Bellflowers Campanula sp.
Cupid's dart Catananche
Cornflower Centaurea sp.
Red valerian (K) Centranthus
Snow in summer Cerastium
Shasta daisy Chrysanthemum
Golden star Chrysogonum
Clematis Clematis integrifolia
Coreopsis Coreopsis sp. and cvs.
Crown vetch Coronilla
Delphinium Delphinium
Pinks Dianthus
Gas plant Dictamnus
Foxglove Digitalis
Mountain avens Dryas
Queen of the prairie Filipendula rubra
Queen of the meadow Filipendula ulmaria
Dropwort Filipendula vulgaris
Blanket flower Gaillardia
Creeping baby's breath Gypsophila repens
Sun rose Helianthemum
Lemon daylily Hemerocallis flava
Sweet rocket Hesperis
Coral bells Heuchera
Hardy gloxinia Incarvillea
Dutch iris Iris hybrids
Bearded iris Iris germanica
Siberian iris Iris sibirica
Dead nettle Lamium
Asiatic lilies Lilium
Flax Linum
Lupine Lupinus
Maltese cross Lychnis
Yellow loosestrife Lysimachia sp.
Welsch poppy Mecanopsis
Cambrica bee balm Monarda
Catmint Nepeta
Evening primrose Oenothera
Peony Paeonia
Oriental poppy Papaver orientale
Beardtongue Penstemon
Phlox Phlox carolina, maculata, suffruticosa
Cinquefoil Potentilla atrosanginea
Primrose Primula beesiana, bullesiana, bulleyana
Salvia, sage Salvia superba
Rock soapwort Saponaria ocymoides
Scabiosa Scabiosa
Checkerbloom Sidalcea
Stachys, betony Stachys
Carolina lupine Thermopsis
Spike speedwell Veronica spicata

July
Monkshood Aconitum
Hollyhock Alcea
Ornamental onion Allium sp.
Butterfly weed Asclepius
Aster Aster x frikartii
Astilbe Astilbe simplicifolia
Milky bellflower Campanula lactiflora
Knapweed Centaurea
Black snakeroot Cimicifuga
Purple coneflower Echinacea
Globe thistle Echinops
Fleabane Erigeron
Goat's rue Galega
Summer hyacinth Galtonia
Gentian Gentiana sp.
Baby's breath Gypsophila
Sunflower Helianthus
Daylily Hemerocallis
Hosta Hosta cvs.
Inula Inula
Japanese iris Iris kaempferi
Red hot poker Kniphofia tuckii
Perennial sweet pea Lathyrus
Lavender Lavendula
Oriental lily Lilium
Statice Limonium
Golden flax Linum flavum
Purple loosestrife Lythrum
Mallow Malva
Plume poppy Macleaya
Summer phlox Phlox paniculata
Obedient plant Physostegia
Yellow coneflower Rudbeckia laciniata
Rue Ruta
Meadow clary Salvia pratensis
Stonecrop Sedum sp.
Meadow rue Thalictrum
Yucca Yucca

August
Monkshood Aconitum
Pearly everlasting Anaphalis
Grapeleaf anemone Anemone vitifolia
Mugwort Artemisis lactiflora
Italian aster Aster amellus
Turtlehead Chelone sp.
Chrysanthemum Chrysanthemum
Golden aster Chrysopsis
Clematis Clematis heracleifolia
Mist flower Eupatorium sp.
Bottle gentian Gentiana andrewsii
Helenium Helenium autumnale
Hosta Hosta
Red hot poker Kniphofia uvaria
Gayfeather Liatris
Lily Lilium speciosum
Lily turf Liriope
Blue lobelia Lobelia siphilitica
Fleece flower Polygonum
Black-eyed Susan Rudbeckia
Stoke's aster Stokesia
Veronicastrum Veronicastrum

September
Japanese anemone Anemone hybrids
Michaelmas daisy Aster
Fall mums Chrysanthemum
Bugbane Cimicifuga simplex
Autumn crocus Colchicum
Hibiscus Hibiscus
Waxbells Kirengeshoma
Cardinal flower Lobelia cardinalis
Gooseneck loosestrife Lysimachia
Mountain fleece Polygonum
Sedum Ruby Glow Sedum
October daphne Sedum sieboldii
Sedum 'Autumn Joy' Sedum spectabile
Goldenrod Solidago
Tovara Tovara