Species Blooming in Summer

The flowering seasons as they are used on this website are not the strict calendar seasons (ie, summer starting on June 21, etc). A rather loose definition is used. Therefore you may find a species listed under both Spring and Summer if it blooms, say, from late May through mid June.

On this website, Spring refers to species that bloom from mid-March through to about mid-June. Summer covers the period from about early June through to the end of August. Fall covers the period from sometime in late August through to the end of November. And Winter is the period from December through March.

• Adder's Mouth, Green (Malaxis unifolia)
• Agrimony (Agrimonia gryposepala)
• Agrimony, Small-flowered (Agrimonia parviflora)
• Ailanthus (Ailanthus altissima)
• Alexanders, Golden (Zizia aurea)
• Alfalfa (Medicago sativa)
• Alyssum, Hoary (Berteroa incana)
• Amaranth, Green (Amaranthus retroflexus)
• Anemone, Canada (Anemone canadensis)
• Anemone, Long-fruited (Anemone cylindrica)
• Anemone, Small-flowered (Anemone parviflora)
• Angelica, Great (Angelica atropurpurea)
• Aniseroot (Osmorhiza longistylis)
• Apple-of-Peru (Nicandra physalodes)
• Arethusa (Arethusa bulbosa)
• Arrowgrass, Marsh (Triglochin palustris)
• Arrowgrass, Seaside (Triglochin maritima)
• Arrowhead, Common (Sagittaria latifolia)
• Arrowwood, Downy (Viburnum rafinesquianum)
• Arrowwood, Smooth (Viburnum recognitum)
• Artichoke, Jerusalem (Helianthus tuberosus)
• Arum, Water (Calla palustris)
• Asparagus (Asparagus officinalis)
• Aster, Amethyst (Symphyotrichum x amethystinum)
• Aster, Arrow-leaved (Symphyotrichum urophyllum)
• Aster, Azure (Symphyotrichum oolentangiense)
• Aster, Bog (Oclemena nemoralis)
• Aster, Calico (Symphyotrichum lateriflorum)
• Aster, Flat-topped White (Doellingeria umbellata)
• Aster, Fringed Blue (Symphyotrichum ciliolatum)
• Aster, Frost (Symphyotrichum pilosum)
• Aster, Heart-leaved (Symphyotrichum cordifolium)
• Aster, Heath (Symphyotrichum ericoides)
• Aster, Large-leaved (Eurybia macrophylla)
• Aster, New England (Symphyotrichum novae-angliae)
• Aster, Panicled (Symphyotrichum lanceolatum)
• Aster, Purple-stemmed (Symphyotrichum puniceum)
• Aster, Rush (Symphyotrichum boreale)
• Aster, Smooth (Symphyotrichum laeve)
• Aster, Upland White (Solidago ptarmicoides)
• Aster, Whorled (Oclemena acuminata)
• Avens, Catlings (Geum X catlingii)
• Avens, Water (Geum rivale)
• Avens, White (Geum canadense)
• Avens, Wood (Geum urbanum)
• Avens, Yellow (Geum aleppicum)
• Baked-apple Berry (Rubus chamaemorus)
• Baneberry, Red (Actaea rubra)
• Baneberry, White (Actaea pachypoda)
• Barberry, European (Berberis vulgaris)
• Barberry, Japanese (Berberis thunbergii)
• Basil, Wild (Clinopodium vulgare)
• Basswood (Tilia americana)
• Bean, Trailing Wild (Strophostyles helvola)
• Bearberry (Arctostaphylos uva-ursi)
• Beardtongue, Foxglove (Penstemon digitalis)
• Beardtongue, Hairy (Penstemon hirsutus)
• Bedstraw, Labrador (Galium labradoricum)
• Bedstraw, Small (Galium trifidum)
• Bedstraw, Sweet-scented (Galium triflorum)
• Bedstraw, Yellow (Galium verum)
• Bellflower, Clustered (Campanula glomerata)
• Bellflower, Creeping (Campanula rapunculoides)
• Bellflower, Marsh (Campanula aparinoides)
• Bellflower, Tall (Campanula americana)
• Bindweed, Eurasian Black (Fallopia convolvulus)
• Bindweed, Field (Convolvulus arvensis)
• Bindweed, Hedge (Calystegia sepium)
• Bindweed, Upright (Calystegia spithamaea)
• Bistort, Alpine (Bistorta vivipara)
• Bladdernut (Staphylea trifolia)
• Bladderwort, Common (Utricularia vulgaris)
• Bladderwort, Flat-leaved (Utricularia intermedia)
• Bladderwort, Horned (Utricularia cornuta)
• Bladderwort, Humped (Utricularia gibba)
• Blanket Flower, Showy (Gaillardia pulchella)
• Blazing Star, Spiked (Liatris spicata)
• Blue Curls (Trichostema dichotomum)
• Blue-eyed Grass, Common (Sisyrinchium montanum)
• Blue-eyed Grass, Slender (Sisyrinchium mucronatum)
• Blue-eyed Grass, Stout (Sisyrinchium angustifolium)
• Blue-eyed Grass, White (Sisyrinchium albidum)
• Bluebells, Northern (Mertensia paniculata)
• Blueberry, Velvetleaf (Vaccinium myrtilloides)
• Bluehearts (Buchnera americana)
• Bower, Virgin's (Clematis virginiana)
• Buckthorn, Alder-leaved (Rhamnus alnifolia)
• Buckthorn, Common (Rhamnus cathartica)
• Bunchberry (Cornus canadensis)
• Bur Reed, Lesser (Sparganium americanum)
• Butter-and-eggs (Linaria vulgaris)
• Buttercup, White Water (Ranunculus aquatilis)
• Butterwort (Pinguicula vulgaris)
• Buttonbush (Cephalanthus occidentalis)
• Cactus, Prickly Pear (Opuntia humifusa)
• Calamint, Low (Clinopodium arkansanum)
• Campion, Bladder (Silene vulgaris)
• Campion, Red (Lychnis dioica)
• Campion, White (Silene latifolia)
• Cancerroot, One-flowered (Orobanche uniflora)
• Cancerwort, Roundleaf (Kickxia spuria)
• Cancerwort, Sharpleaf (Kickxia elatine)
• Carrion Flower (Smilax herbacea)
• Carrion Flower (Smilax lasioneura)
• Carrot, Wild (Daucus carota)
• Catchfly, Night-flowering (Silene noctiflora)
• Catnip (Nepeta cataria)
• Cattail, Common (Typha latifolia)
• Cattail, Narrow-leaved (Typha angustifolia)
• Celandine (Chelidonium majus)
• Centaury (Centaurium erythraea)
• Cherry, Sand (Prunus pumila)
• Chickweed, Field (Cerastium arvense)
• Chickweed, Mouse-ear (Cerastium fontanum)
• Chicory (Cichorium intybus)
• Chives (Allium schoenoprasum)
• Cinquefoil, Common (Potentilla simplex)
• Cinquefoil, Shrubby (Dasiphora fruticosa)
• Cinquefoil, Tall (Drymocallis arguta)
• Cinquefoil, Three-toothed (Sibbaldia tridentata)
• Clammyweed (Polanisia dodecandra)
• Clearweed (Pilea pumila)
• Clintonia, Yellow (Clintonia borealis)
• Coffee Tree, Kentucky (Gymnocladus dioicus)
• Colicroot (Aletris farinosa)
• Columbine, Wild (Aquilegia canadensis)
• Columbo, American (Frasera caroliniensis)
• Compass Plant (Silphium laciniatum)
• Coneflower, Gray-headed (Ratibida pinnata)
• Coneflower, Green-headed (Rudbeckia laciniata)
• Coneflower, Pale Purple (Echinacea pallida)
• Coneflower, Purple (Echinacea purpurea)
• Coralroot, Spotted (Corallorhiza maculata)
• Coralroot, Striped (Corallorhiza striata)
• Coreopsis, Tall (Coreopsis tripteris)
• Corydalis, Golden (Corydalis aurea)
• Cowwheat (Melampyrum lineare)
• Cranberry, Large (Vaccinium macrocarpon)
• Cranberry, Small (Vaccinium oxycoccos)
• Cranesbill, Bicknell's (Geranium bicknellii)
• Creeper, Trumpet (Campsis radicans)
• Creeper, Virginia (Parthenocissus quinquefolia)
• Cress, Hairy Rock (Arabis hirsuta)
• Crowfoot, Bristly (Ranunculus pensylvanicus)
• Crowfoot, Cursed (Ranunculus sceleratus)
• Crowfoot, Small Yellow Water (Ranunculus gmelinii)
• Cucumber Root, Indian (Medeola virginiana)
• Cucumber, One-seeded Bur (Sicyos angulatus)
• Cucumber, Wild (Echinocystis lobata)
• Culver's Root (Veronicastrum virginicum)
• Currant, Wild Black (Ribes americanum)
• Daisy, English (Bellis perennis)
• Daisy, Oxeye (Leucanthemum vulgare)
• Dandelion, Common (Taraxacum officinale)
• Devil's Bit (Chamaelirium luteum)
• Dock, Greater Water (Rumex britannica)
• Dock, Prairie (Silphium terebinthinaceum)
• Dogwood, Alternate-leaved (Cornus alternifolia)
• Dogwood, Red Osier (Cornus stolonifera)
• Dogwood, Silky (Cornus obliqua)
• Dutchman's Pipe (Isotrema macrophyllum)
• Elderberry, Common (Sambucus nigra)
• Elecampane (Inula helenium)
• Frogbit (Hydrocharis morsus-ranae)
• Gentian, Narrow-leaved (Gentiana linearis)
• Gentian, Orange-fruited Horse (Triosteum aurantiacum)
• Gentian, Smaller Fringed (Gentianopsis virgata)
• Gentian, Spurred (Halenia deflexa)
• Goldenrod, Blue-stemmed (Solidago caesia)
• Goldenrod, Bog (Solidago uliginosa)
• Goldenrod, Canada (Solidago canadensis)
• Goldenrod, Early (Solidago juncea)
• Goldenrod, Grass-leaved (Euthamia graminifolia)
• Goldenrod, Gray (Solidago nemoralis)
• Goldenrod, Hairy (Solidago hispida)
• Goldenrod, Houghton's (Solidago houghtonii)
• Goldenrod, Late (Solidago gigantea)
• Goldenrod, Ohio (Solidago ohioensis)
• Goldenrod, Rough-leaved (Solidago patula)
• Goldenrod, Rough-stemmed (Solidago rugosa)
• Goldenrod, Seaside (Solidago sempervirens)
• Goldenrod, Sharp-leaved (Solidago arguta)
• Goldenrod, Showy (Solidago speciosa)
• Goldenrod, Stiff-leaved (Solidago rigida)
• Goldenrod, Stout (Solidago squarrosa)
• Goldenrod, Tall (Solidago altissima)
• Goldenrod, Zigzag (Solidago flexicaulis)
• Grass Pink (Calopogon tuberosus)
• Grass, Switch (Panicum virgatum)
• Grass-of-Parnassus (Parnassia glauca)
• Ground Cherry, Clammy (Physalis heterophylla)
• Ground Cherry, Smooth (Physalis longifolia)
• Harebell (Campanula rotundifolia)
• Heather, False (Hudsonia tomentosa)
• Hedge Parsley, Japanese (Torilis japonica)
• Helleborine (Epipactis helleborine)
• Hemlock, Bulb-bearing Water (Cicuta bulbifera)
• Hemlock, Poison (Conium maculatum)
• Hemlock, Water (Cicuta maculata)
• Herb Robert (Geranium robertianum)
• Hercules' Club (Aralia elata)
• Himalayan Balsam (Impatiens glandulifera)
• Honewort (Cryptotaenia canadensis)
• Honeysuckle, Bush (Diervilla lonicera)
• Horsemint (Monarda punctata)
• Hyssop, Yellow Giant (Agastache nepetoides)
• Indian Paintbrush (Castilleja coccinea)
• Indian Pipe (Monotropa uniflora)
• Indigo, False (Amorpha fruticosa)
• Iris, Blue Flag (Iris versicolor)
• Iris, Yellow (Iris pseudacorus)
• Ironweed, Tall (Vernonia gigantea)
• Ivy, Ground (Glechoma hederacea)
• Joe Pye Weed, Sweet-scented (Eutrochium purpureum)
• Jointweed, Northern (Polygonum articulatum)
• Jumpseed (Persicaria virginiana)
• Knotweed, Japanese (Fallopia japonica)
• Ladies' Tresses, Great Plains (Spiranthes magnicamporum)
• Ladies' Tresses, Hooded (Spiranthes romanzoffiana)
• Ladies' Tresses, Nodding (Spiranthes cernua)
• Ladies' Tresses, Wide-leaved (Spiranthes lucida)
• Lady's Slipper, Hybrid (Cypripedium parviflorum X C. candidum)
• Lady's Slipper, Large Yellow (Cypripedium parviflorum var pubescens)
• Lady's Slipper, Pink (Cypripedium acaule)
• Lady's Slipper, Showy (Cypripedium reginae)
• Lady's Slipper, Small White (Cypripedium candidum)
• Lamb's Quarters (Chenopodium album)
• Larch, European (Larix decidua)
• Leek, Wild (Allium tricoccum)
• Lettuce, White (Nabalus albus)
• Lilac, Common (Syringa vulgaris)
• Lily, Michigan (Lilium michiganense)
• Lily, Wood (Lilium philadelphicum)
• Lizard's Tail (Saururus cernuus)
• Lobelia, Great (Lobelia siphilitica)
• Locust, Black (Robinia pseudoacacia)
• Looking-glass, Venus's (Triodanis perfoliata)
• Loosestrife, Fringed (Lysimachia ciliata)
• Loosestrife, Prairie (Lysimachia quadriflora)
• Loosestrife, Purple (Lythrum salicaria)
• Loosestrife, Whorled (Lysimachia quadrifolia)
• Loosestrife, Yellow (Lysimachia terrestris)
• Lopseed (Phryma leptostachya)
• Lungwort, Sea (Mertensia maritima)
• Meadow Beauty (Rhexia virginica)
• Medick, Black (Medicago lupulina)
• Mignonette, Yellow Upright (Reseda lutea)
• Milkweed, Butterfly (Asclepias tuberosa)
• Milkweed, Common (Asclepias syriaca)
• Milkweed, Poke (Asclepias exaltata)
• Milkweed, Swamp (Asclepias incarnata)
• Milkweed, Whorled (Asclepias verticillata)
• Mint, Downy Wood (Blephilia ciliata)
• Monkey Flower, Square-stemmed (Mimulus ringens)
• Moonseed, Canada (Menispermum canadense)
• Mountain Mint, Virginia (Pycnanthemum virginianum)
• Mullein, Common (Verbascum thapsus)
• Mullein, Dark (Verbascum nigrum)
• Mullein, Moth (Verbascum blattaria)
• Mustard, Garlic (Alliaria petiolata)
• Nightshade, Enchanter's (Circaea canadensis)
• Nipplewort (Lapsana communis)
• Olive, Autumn (Elaeagnus umbellata)
• Onion, Nodding Wild (Allium cernuum)
• Orchid, Alaska (Platanthera unalascensis)
• Orchid, Blunt Leaf Rein (Platanthera obtusata)
• Orchid, Club Spur (Platanthera clavellata)
• Orchid, Hooker's (Platanthera hookeri)
• Orchid, Large Round Leaf (Platanthera macrophylla)
• Orchid, Northern Green (Platanthera hyperborea)
• Orchid, Prairie White Fringed (Platanthera leucophaea)
• Orchid, Ragged Fringed (Platanthera lacera)
• Orchid, Round Leaf (Platanthera orbiculata)
• Orchid, Smaller Purple Fringed (Platanthera psycodes)
• Orchid, White Bog (Platanthera dilatata)
• Orchid, White Fringed (Platanthera blephariglottis)
• Oxeye (Heliopsis helianthoides)
• Pansy, Field (Viola bicolor)
• Parsnip, Water (Sium suave)
• Pea, Beach (Lathyrus japonicus)
• Pennyroyal, False (Trichostema brachiatum)
• Pickerelweed (Pontederia cordata)
• Pimpernel, Yellow (Taenidia integerrima)
• Pinesap (Hypopitys monotropa)
• Pinweed, Hairy (Lechea mucronata)
• Pipsissewa (Chimaphila umbellata)
• Pogonia, Rose (Pogonia ophioglossoides)
• Pokeweed (Phytolacca americana)
• Polygala, Fringed (Polygaloides paucifolia)
• Prairie Smoke (Geum triflorum)
• Prickly Ash (Zanthoxylum americanum)
• Privet (Ligustrum vulgare)
• Purslane (Portulaca oleracea)
• Purslane, Milk (Euphorbia maculata)
• Pussytoes, Field (Antennaria neglecta)
• Pussytoes, Parlin's (Antennaria parlinii)
• Pyrola, Green-flowered (Pyrola chlorantha)
• Pyrola, One-Flowered (Moneses uniflora)
• Pyrola, One-sided (Orthilia secunda)
• Raisin, Wild (Viburnum nudum)
• Raspberry, Black (Rubus occidentalis)
• Raspberry, Wild Red (Rubus idaeus)
• Rattlesnake Plantain, Downy (Goodyera pubescens)
• Rattlesnake Plantain, Dwarf (Goodyera repens)
• Rattlesnake Plantain, Green-leaved (Goodyera oblongifolia)
• Rattlesnakeroot, Glaucous (Nabalus racemosus)
• Rattlesnakeroot, Tall (Nabalus altissimus)
• Rattlesnakeroot, Three-leaved (Nabalus trifoliolatus)
• River Beauty (Chamerion latifolium)
• Rocket, Dame's (Hesperis matronalis)
• Rose, Prairie (Rosa setigera)
• Rose, Swamp (Rosa palustris)
• Rosemary, Bog (Andromeda polifolia)
• Saltwort, Common (Salsola tragus)
• Sandwort, Rock (Sabulina michauxii)
• Senna, Wild (Senna hebecarpa)
• Shinleaf (Pyrola elliptica)
• Silverrod (Solidago bicolor)
• Silverweed (Potentilla anserina)
• Snakeroot, Seneca (Polygala senega)
• Snapdragon, Dwarf (Chaenorrhinum minus)
• Sneezeweed (Helenium autumnale)
• Snow in Summer (Cerastium tomentosum)
• Snowberry, Creeping (Gaultheria hispidula)
• Solomon's Seal, False (Maianthemum racemosum)
• Solomon's Seal, Great (Polygonatum canaliculatum)
• Solomon's Seal, Hairy (Polygonatum pubescens)
• Sorrel, Common Wood (Oxalis montana)
• Speedwell, Bird's-eye (Veronica chamaedrys)
• Speedwell, Common (Veronica officinalis)
• Speedwell, Marsh (Veronica scutellata)
• Speedwell, Persian (Veronica persica)
• Speedwell, Slender (Veronica filiformis)
• Speedwell, Thyme-leaved (Veronica serpyllifolia)
• Speedwell, Water (Veronica anagallis-aquatica)
• Spirea, False (Sorbaria sorbifolia)
• Spurge, Cypress (Euphorbia cyparissias)
• Spurge, Flowering (Euphorbia corollata)
• Squawroot (Conopholis americana)
• St Johnswort, Kalm's (Hypericum kalmianum)
• St Johnswort, Shrubby (Hypericum prolificum)
• Starflower (Lysimachia borealis)
• Stonecrop, Mossy (Sedum acre)
• Sundew, Linear-leaved (Drosera linearis)
• Sundew, Round-leaved (Drosera rotundifolia)
• Sundew, Spatulate-leaved (Drosera intermedia)
• Sunflower, Maximilian (Helianthus maximilianii)
• Sunflower, Woodland (Helianthus divaricatus)
• Swallowwort, Black (Cynanchum louiseae)
• Swallowwort, Pale (Cynanchum rossicum)
• Swallowwort, White (Cynanchum vincetoxicum)
• Sweetflag (Acorus calamus)
• Tansy (Tanacetum vulgare)
• Tea, Oswego (Monarda didyma)
• Tearthumb, Arrow-leaved (Persicaria sagittata)
• Tearthumb, Halberd-leaved (Persicaria arifolia)
• Teasel (Dipsacus fullonum)
• Thimbleweed (Anemone virginiana)
• Thistle, Bull (Cirsium vulgare)
• Thistle, Canada (Cirsium arvense)
• Thistle, Field (Cirsium discolor)
• Thistle, Globe (Echinops sphaerocephalus)
• Thistle, Hill's (Cirsium pumilum)
• Thistle, Nodding (Carduus nutans)
• Thistle, Pitcher's (Cirsium pitcheri)
• Tick Trefoil, Showy (Desmodium canadense)
• Toadflax, Dalmation (Linaria dalmatica)
• Tobacco, Indian (Lobelia inflata)
• Tofieldia, Sticky (Triantha glutinosa)
• Touch-me-not, Pale (Impatiens pallida)
• Trefoil, Birdsfoot (Lotus corniculatus)
• Tulip (Tulipa sylvestris)
• Tulip Tree (Liriodendron tulipifera)
• Twayblade, Auricled (Neottia auriculata)
• Twayblade, European Common (Neottia ovata)
• Twayblade, Loesel's (Liparis loeselii)
• Twinflower (Linnaea borealis)
• Velvetleaf (Abutilon theophrasti)
• Vervain, Blue (Verbena hastata)
• Vervain, Hoary (Verbena stricta)
• Vetchling, Marsh (Lathyrus palustris)
• Vetchling, Pale (Lathyrus ochroleucus)
• Vetchling, Tuberous (Lathyrus tuberosus)
• Vetchling, Yellow (Lathyrus pratensis)
• Violet, Green (Hybanthus concolor)
• Viper's Bugloss (Echium vulgare)
• Water Shield (Brasenia schreberi)
• Winterberry (Ilex verticillata)
• Wintergreen (Gaultheria procumbens)
• Woodruff, Sweet (Galium odoratum)
• Yarrow (Achillea millefolium)
• Yucca (Yucca filamentosa)