Revised April 2006 Open a comparison window
| Thumbnail | Scientific Name | Common Name | Family Name | Page Number in Guide | Start Bloom | Stop Bloom | Origin | Synonyms |
|
| Acalypha rhomboidea | common three seeded mercury | Euphorbiaceae | 0 | 6 | 10 | N | rhomboid three seeded mercury |
|
| Acalypha virginica | Virginia three seeded mercury | Euphorbiaceae | 0 | 6 | 10 | N | copperleaf |
| Achillea millefolium | common yarrow | Asteraceae | 271 | 5.2 | 8.1 | Eu | |
|
| Agalinis setacea | gerardia | Scrophulariaceae | 0 | 8 | 9 | N | thread-agalinis |
|
| Agrimonia microcarpa | small fruited agrimony | Rosaceae | 0 | 7 | 9 | N | |
| Allium canadense | meadow garlic | Liliaceae | 353 | 5.4 | 7.1 | N | * Canada garlic,wild garlic |
|
| Allium tricoccum | ramp | Liliaceae | 353 | 6 | 7 | N | |
| Allium vineale | wild garlic | Liliaceae | 354 | 6.1 | 6 | Eu | field garlic,crow garlic,scallions |
|
| Amaranthus hybridus | pigweed | Amaranthaceae | 0 | 8 | 10 | Tr | slim amaranth |
|
| Amaranthus spinosus | spiny amaranth | Amaranthaceae | 0 | 6 | 9 | N | |
| Ampelopsis cordata | heartleaf ampelopsis | Vitaceae | 0 | 6 | 6 | N | |
|
| Amphicarpaea bracteata | hog peanut | Fabaceae | 124 | 8 | 9 | N | |
|
| Anemone virginiana | thimbleweed | Ranunculaceae | 33 | 6.4 | 8.4 | N | |
| Antennaria plantaginifolia | plantain leaf pussytoes | Asteraceae | 273 | 3.4 | 5.3 | N | woman's tobacco |
| Antennaria solitaria | singlehead pussytoes | Asteraceae | 274 | 3.4 | 4.4 | N | * solitary pussytoes |
|
| Anthemis cotula | dogfennel | Asteraceae | 234 | 5 | 8 | Eu | mayweed |
|
| Aplectrum hyemale | putty root | Orchidaceae | 389 | 5.1 | 5.2 | N | * |
| Apocynum cannabinum | Indian hemp | Apocynaceae | 188 | 6.1 | 7 | N | hemp dogbane |
| Aquilegia canadensis | red columbine | Ranunculaceae | 33 | 4.2 | 6.3 | N | |
| Arabis laevigata | smooth rock cress | Brassicaceae | 84 | 4.1 | 5.1 | N | sickle-pod mustard |
| Arisaema dracontium | green dragon | Araceae | 338 | 5.2 | 6.4 | N | |
| Arisaema triphyllum | jack in the pulpit | Araceae | 338 | 4.2 | 5 | N | |
| Asarum canadense | wild ginger | Aristolochiaceae | 28 | 4.2 | 6.1 | N | |
| Asclepias syriaca | common milkweed | Asclepiadaceae | 192 | 6.1 | 7.4 | N | |
| Asclepias tuberosa | butterflyweed | Asclepiadaceae | 193 | 5.4 | 8.3 | N | |
| Asparagus officinalis | asparagus | Liliaceae | 0 | 5 | 6 | C | |
| Aureolaria flava | false foxglove | Scrophulariaceae | 236 | 8 | 9 | N | |
|
| Bidens bipinnata | Spanish needles | Asteraceae | 278 | 7 | 10 | N | |
|
| Bidens comosa | leafy-bracted tickseed | Asteraceae | 0 | 8 | 10 | N | |
| Bidens frondosa | devil's beggartick | Asteraceae | 0 | 8 | 10 | N | |
|
| Bidens laevis | bur marigold | Asteraceae | 279 | 8 | 10 | N | |
|
| Bidens polylepis | Ozark tickweed sunflower | Asteraceae | 279 | 8 | 10 | N | |
| Bignonia capreolata | crossvine | Bignoniaceae | 253 | 4.3 | 6 | N | |
| Boehmeria cylindrica | false nettle | Urticaceae | 50 | 6 | 8 | N | |
| Brassica rapa | turnip mustard | Brassicaceae | 85 | 4.1 | 6 | Eu | field mustard |
| Buglossoides arvensis | corn gromwell | Boraginaceae | 212 | 4 | 7 | Eu,As | Lithospermum arvense |
| Cammassia scilloides | wild hyacinth | Liliaceae | 355 | 4.2 | 4.4 | N | * |
| Campanulastrum americanum | tall bellflower | Campanulaceae | 255 | 7.3 | 10.2 | N | Campanula americana |
| Campsis radicans | trumpet creeper | Bignoniaceae | 253 | 6.4 | 8.1 | N | trumpet vine |
| Capsella bursa-pastoris | shepherd's purse | Brassicaceae | 86 | 3.3 | 11 | Eu | |
| Cardamine hirsuta | bittercress | Brassicaceae | 86 | 2.4 | 3 | Eu | |
| Carduus nutans | nodding thistle | Asteraceae | 281 | 4.4 | 7.4 | Eu | nodding plumeless thistle |
|
| Carex laxiflora | loose flowered sedge | Cyperaceae | 0 | 5 | 7 | N | |
| Caulophyllum thalictroides | blue cohosh | Berberidaceae | 44 | 3.4 | 5.2 | N | * |
| Centaurea cyanus | bachelor's button | Asteraceae | 282 | 4 | 6 | M | garden cornflower |
| Cerastium vulgatum | mouse-eared chickweed | Caryophyllaceae | 0 | 4 | 11 | Eu,As | |
|
| Chenopodium album | lamb's quarters | Chenopodiaceae | 51 | 8 | 10 | Eu,As | |
| Cichorium intybus | chicory | Asteraceae | 283 | 5.3 | 9.4 | Eu, A | |
| Cimicifuga racemosa | black cohosh | Ranunculaceae | 34 | 5 | 7 | N | |
|
| Cirsium discolor | field thistle | Asteraceae | 284 | 7 | 10 | N | |
| Cirsium vulgare | bull thistle | Asteraceae | 286 | 6.1 | 10 | Eu,As | |
| Claytonia virginica | spring beauty | Portulacaceae | 53 | 3.3 | 5.2 | N | |
| Clematis viorna | vasevine | Ranunculaceae | 35 | 5.4 | 7 | N | leather flower |
| Clematis virginiana | virgin's bower | Ranunculaceae | 36 | 7 | 9 | N | |
| Cocculus carolinus | Carolina snailseed | Menispermaceae | 0 | 6 | 8 | N | |
| Commelina communis | Asiatic dayflower | Commelinaceae | 341 | 7.2 | 9.4 | As | common dayflower |
| Commelina erecta | slender dayflower | Commelinaceae | 342 | 6.4 | 10 | N | white mouth dayflower,erect dayflower |
| Conyza canadensis | horseweed | Asteraceae | 0 | 8 | 10 | N | |
| Coreopsis major | whorled leaf coreopsis | Asteraceae | 287 | 5.4 | 7.4 | N | greater tickseed,forest tickseed |
| Coronilla varia | purple crown vetch | Fabaceae | 130 | 5.2 | 8.4 | Eu | |
| Croton monanthogynus | lemon spurge | Euphorbiaceae | 157 | 6 | 10 | N | prairie tea |
| Cynoglossum virginianum | wild comfrey | Boraginaceae | 210 | 4.3 | 5.4 | N | |
| Datura stramonium | jimson weed | Solanaceae | 196 | 6.1 | 8 | N | |
| Delphinium tricorne | dwarf larkspur | Ranunculaceae | 37 | 3.4 | 5.2 | N | |
|
| Desmodium dillenii | Dillenius' tick trefoil | Fabaceae | 0 | 6 | 9 | N | Desmodium glabellum |
|
| Desmodium glutinosum | pointed leaved tick trefoil | Fabaceae | 0 | 6.4 | 8.1 | N | |
| Desmodium nudiflorum | naked flowered tick trefoil | Fabaceae | 0 | 7.2 | 9.2 | N | |
| Dianthus armeria | Deptford pink | Caryophyllaceae | 55 | 6.3 | 7.4 | Eu | * |
|
| Dicliptera brachiata | branched foldwing | Acanthaceae | 6 | 11 | N | ||
|
| Diodia virginiana | buttonweed | Rubiaceae | 261 | 7 | 8 | N | |
| Dioscorea oppositifolia | cinnamon vine | Dioscoreaceae | 384 | 6 | 8 | As,C | Dioscorea batatas |
| Dioscorea villosa | wild yam | Dioscoreaceae | 384 | 5.1 | 8 | N | Dioscorea quaternata,colic root |
| Duchesnea indica | Indian strawberry | Rosaceae | 116 | 3.3 | 10 | As | |
| Elephantopus carolinianus | leafy elephant's foot | Asteraceae | 292 | 8 | 9 | N | |
| Epifagus virginiana | beech drops | Orobanchaceae | 250 | 7 | 11 | N | |
|
| Erechtites hieraciifolia | pilewort | Asteraceae | 292 | 8 | 9 | N | Erechtites hieracifolia,fireweed,American burnweed |
| Erigeron annuus | eastern daisy fleabane | Asteraceae | 293 | 5.3 | 10.2 | N | |
| Erigeron philadelphicus | Philadelphia fleabane | Asteraceae | 293 | 4.2 | 6.1 | N | |
| Erigeron strigosus | lesser daisy fleabane | Asteraceae | 293 | 5.2 | 8 | N | prairie fleabane |
| Erythronium albidum | white trout lily | Liliaceae | 359 | 3.4 | 4.2 | N | * |
| Erythronium americanum | trout lily | Liliaceae | 359 | 3.4 | 4.4 | N | dogtooth violet |
|
| Eupatorium capillifolium | sweet Annie | Asteraceae | 294 | 9 | 10 | N | dog fennel |
| Eupatorium fistulosum | hollow joe-pye-weed | Asteraceae | 295 | 7 | 9 | N | joe pye weed |
|
| Eupatorium perfoliatum | common boneset | Asteraceae | 296 | 8 | 10 | N | |
| Eupatorium serotinum | late flowering throughwort | Asteraceae | 297 | 8 | 10 | N | late boneset |
| Euphorbia corollata | flowering spurge | Euphorbiaceae | 158 | 6.4 | 9.2 | N | |
|
| Euphorbia glyptosperma | ridge seeded spurge | Euphorbiaceae | 0 | 6 | 10 | NAm | |
|
| Euphorbia maculata | prostrate spurge | Euphorbiaceae | 0 | 5 | 10 | N | |
| Fragaria virginiana | wild strawberry | Rosaceae | 117 | 4.2 | 5 | N | |
| Galium aparine | cleavers | Rubiaceae | 261 | 4.2 | 6.3 | N | |
|
| Galium asprellum | rough bedstraw | Rubiaceae | 0 | 6 | 8 | NAm | |
| Galium circaezans | wild licorice | Rubiaceae | 261 | 5.4 | 7.4 | N | |
|
| Galium trifolium | fragrant bedstraw | Rubiaceae | 261 | 6.4 | 8.4 | N | |
| Geranium carolinianum | pink Carolina cranesbill | Geraniaceae | 170 | 4.3 | 8 | N | Carolina geranium |
| Geranium dissectum | red cranesbill | Geraniaceae | 0 | 5 | 6 | Eu,As | cutleaf geranium |
| Geranium molle | dove's foot cranesbill | Geraniaceae | 171 | 4.3 | 9 | N | dovefoot geranium |
|
| Geum aleppicum | yellow avens | Rosaceae | 0 | 6 | 8 | N | Geum strictum |
| Geum canadense | white avens | Rosaceae | 117 | 6.4 | 8.4 | N | |
| Geum vernum | spring avens | Rosaceae | 117 | 4.3 | 5 | N | |
|
| Geum virginianum | cream avens | Rosaceae | |||||
| Hedera helix | English ivy | Araliaceae | 7.2 | 9 | Eu | ||
| Helenium amarum | fine leaved sneezeweed | Asteraceae | 299 | 7.2 | 10 | N | Helenium tenuifolium,bitterweed,yellowdicks |
|
| Helianthus divaricatus | woodland sunflower | Asteraceae | 302 | 7.2 | 9.2 | N | |
| Helianthus microcephalus | small headed sunflower | Asteraceae | 303 | 8 | 9 | N | small woodland sunflower |
| Hemerocallis fulva | day lily | Liliaceae | 360 | 5.4 | 7.2 | C,G | |
| Heuchera americana | common alumroot | Saxifragaceae | 109 | 4.4 | 7.1 | NAm | American alumroot |
| Hibiscus syriacus | rose of Sharon | Malvaceae | 69 | 7 | 9 | C | |
|
| Hieracium scabrum | rough hawkweed | Asteraceae | 0 | 7 | 9 | N | |
| Houstonia purpurea var. purpurea | summer bluets | Rubiaceae | 264 | 4.2 | 6.1 | N | * Hedyotis purpurea, Houstonia purpurea,Venus' pride |
| Houstonia pusilla | least bluet | Rubiaceae | 262 | 3.4 | 4 | N | Hedyotis crassifolia,tiny bluet,Houstonia patens |
| Hydrastis canadensis | golden seal | Ranunculaceae | 40 | 4.2 | 5.2 | N | * |
| Hydrophyllum appendiculatum | great waterleaf | Hydrophyllaceae | 206 | 4.4 | 6 | N | appendaged waterleaf |
| Impatiens capensis | orange spotted touch me not | Balsaminaceae | 171 | 5.4 | 9 | N | |
| Impatiens pallida | yellow touch me not | Balsaminaceae | 172 | 5.4 | 8.3 | N | |
| Iodanthus pinnatifidus | purple rocket | Brassicaceae | 91 | 4.4 | 6.2 | N | |
| Ipomoea hederacea | ivy leaved morning glory | Convolvulaceae | 200 | 6 | 10 | Tr | |
| Ipomoea lacunosa | small white morning glory | Convolvulaceae | 201 | 8 | 10 | Tr | |
| Ipomoea pandurata | wild potato vine | Convolvulaceae | 201 | 5.4 | 8.4 | N | * |
| Ipomoea purpurea | common morning glory | Convolvulaceae | 202 | 7 | 10 | Tr | |
| Jeffersonia diphylla | twinleaf | Berberidaceae | 45 | 3.1 | 4.2 | N | * |
| Krigia biflora | two flower dwarf dandelion | Asteraceae | 310 | 4.3 | 7.1 | N | two flowered cynthia,orange dwarf dandelion |
| Lactuca canadensis | wild lettuce | Asteraceae | 311 | 7.1 | 8.3 | N | Canada lettuce |
| Lactuca floridana | tall blue lettuce | Asteraceae | 311 | 6 | 9 | N | woodland lettuce,Florida blue lettuce |
| Lactuca serriola | prickly lettuce | Asteraceae | 311 | 6.1 | 9 | Eu | |
| Laportea canadensis | wood nettle | Urticaceae | 50 | 7.3 | 8.4 | N | |
|
| Lemna perpusilla | duckweed | Lemnaceae | N | ||||
| Lepidium virginicum | poor man's pepper | Brassicaceae | 93 | 5.2 | 11 | N | peppergrass, Virginia pepperweed |
| Lespedeza cuneata | Chinese lespedeza | Fabaceae | 0 | 7 | 9 | As | |
|
| Lespedeza hirta | hairy bush clover | Fabaceae | 0 | 8 | 10 | N | |
|
| Lespedeza virginica | slender bush clover | Fabaceae | 135 | 8 | 9 | N | |
| Lobelia inflata | Indian tobacco | Campanulaceae | 257 | 7.2 | 10.2 | N | * |
| Lobelia siphilitica | great blue lobelia | Campanulaceae | 258 | 10 | 11 | N | |
|
| Ludwigia decurrens | wingstem water primrose | Onagraceae | 150 | 6 | 10 | N | |
|
| Ludwigia palustris | water purslane | Onagraceae | 0 | 6 | 11 | N | marsh purslane |
| Luzula bulbosa | bulbous woodrush | Juncaceae | 5.2 | N | |||
|
| Luzula echinata | hedgehog wood rush | Juncaceae | 0 | 5 | 6 | N | |
|
| Malva neglecta | cheeses | Malvaceae | 0 | 4 | 10 | Eu,As | |
| Matelea gonocarpos | common anglepod | Asclepiadaceae | 195 | 6 | 7 | N | Matelea gonocarpa,angular milkvine |
| Melilotus alba | white sweet clover | Fabaceae | 5.4 | 8.4 | Eu | ||
| Menispermum canadense | Canada moonseed | Menispermaceae | 5.2 | 7 | N | ||
| Mertensia virginica | Virginia bluebells | Boraginaceae | 213 | 3.4 | 5.1 | N | |
|
| Mimulus alatus | monkey flower | Scrophulariaceae | 243 | 7 | 8 | N | |
| Myosotis macrosperma | forget me not | Boraginaceae | 0 | 4 | 5 | N | |
| Nemophila aphylla | baby blue eyes | Hydrophyllaceae | 207 | 3.3 | 5 | N | Nemophila triloba,smallflower baby blue eyes |
| Nothoscordum bivalve | false garlic | Liliaceae | 365 | 4.1 | 5.2 | N | |
| Oenothera biennis | common evening primrose | Onagraceae | 152 | 6 | 10 | N | |
| Ornithogalum umbellatum | star of Bethlehem | Liliaceae | 366 | 4.3 | 4.4 | Eu,G | * sleepydick |
| Oxalis grandis | giant woodsorrel | Oxalidaceae | 168 | 4.3 | 6.1 | N | great yellow woodsorrel |
| Oxalis stricta | yellow woodsorrel | Oxalidaceae | 169 | 4.3 | 6.4 | N | common yellow oxalis,Oxalis cymosa, Oxalis dillenii |
| Oxalis violacea | violet woodsorrel | Oxalidaceae | 170 | 4.1 | 6 | N | |
|
| Panax quinquefolius | American ginseng | Araliaceae | 172 | 5 | 7 | N | |
| Passiflora incarnata | purple passion flower | Passifloraceae | 82 | 6.3 | 9 | N | maypops |
| Passiflora lutea | yellow passion flower | Passifloraceae | 82 | 6 | 9 | N | |
| Pedicularis canadensis | wood betony | Scrophulariaceae | 244 | 4.2 | 5.3 | N | |
| Penstemon calycosus | small beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
|
| Penstemon canescens | eastern gray beardtongue | Scrophulariaceae | 245 | 5 | 6 | N | |
|
| Penstemon digitalis | tall white beardtongue | Scrophulariaceae | 245 | 5.2 | 7.1 | N | * |
| Phacelia dubia var. interior | glade phacelia | Hydrophyllaceae | 208 | 4 | 6 | N | interior phacelia |
| Phacelia purshii | Miami mist | Hydrophyllaceae | 209 | 4.3 | 5.2 | N | |
| Phryma leptostachya | American lopseed | Verbenaceae | 216 | 7.2 | 8.4 | N | |
| Phyla lanceolata | lance leaf fogfruit | Verbenaceae | 214 | 5 | 10 | N | |
|
| Physalis virginiana | Virginia ground cherry | Solanaceae | 197 | 5.4 | 10.1 | N | * |
| Phytolacca americana | pokeweed | Phytolaccaceae | 50 | 6.1 | 9 | N | |
| Pilea pumila | clearweed | Urticaceae | 0 | 7 | 10 | N | |
| Plantago lanceolata | English plantain | Plantaginaceae | 234 | 4.3 | 10 | Eu,As | |
|
| Plantago major | common plantain | Plantaginaceae | 0 | 5 | 9 | Eu,As | |
| Podophyllum peltatum | may apple | Berberidaceae | 46 | 4.3 | 5.4 | N | |
| Polygonatum biflorum | smooth Solomon's seal | Liliaceae | 366 | 4.3 | 5.4 | N | * |
|
| Polygonum buxiforme | shore knotweed | Polygonaceae | N | ||||
|
| Polygonum caespitosum | long bristled smartweed | Polygonaceae | As | Polygonum cespitosum,oriental ladysthumb | |||
|
| Polygonum convolvulus | black bindweed | Polygonaceae | 0 | 7 | 9 | Eu | |
|
| Polygonum erectum | erect knotweed | Polygonaceae | 0 | 7 | 9 | N | |
|
| Polygonum hydropiperoides | water pepper | Polygonaceae | 0 | 6 | 9 | N | |
|
| Polygonum pensylvanicum | Pennsylvania smartweed | Polygonaceae | 60 | 5 | 10 | N | |
|
| Polygonum persicaria | lady's thumb | Polygonaceae | 0 | 6 | 10 | Eu | |
|
| Polygonum scandens | false buckwheat | Polygonaceae | 61 | 7 | 10 | N | |
| Polygonum virginianum | Virginia knotweed | Polygonaceae | 61 | 7 | 10 | N | |
| Polymnia canadensis | pale flowered leafcup | Asteraceae | 317 | 5.3 | 10 | N | white bear's foot,white flower leafcup |
|
| Portulaca oleracea | purslane | Portulacaceae | 56 | 6 | 11 | As | |
| Potentilla recta | sulfur cinquefoil | Rosaceae | 119 | 5.1 | 7 | Eu | rough fruited cinquefoil, sulphur cinquefoil |
|
| Prenanthes altissima | rattlesnake root | Asteraceae | 318 | 8 | 9 | N | tall white lettuce |
| Ranunculus abortivus | kidney leaf buttercup | Ranunculaceae | 40 | 4.2 | 5.2 | N | * littleleaf buttercup |
|
| Ranunculus acris | common buttercup | Ranunculaceae | 0 | 6 | 8 | Eu | |
| Ranunculus bulbosus | bulbosus buttercup | Ranunculaceae | 41 | 3.4 | 6 | Eu | |
|
| Ranunculus micranthus | hairy kidney leaf | Ranunculaceae | 0 | 3 | 5 | N | |
|
| Ranunculus pensylvanicus | bristly buttercup | Ranunculaceae | 0 | 7 | 9 | Nam | |
|
| Ranunculus recurvatus | recurved buttercup | Ranunculaceae | 42 | 4.3 | 5.2 | N | * blisterwort |
|
| Ranunculus sceleratus | cursed crowfoot | Ranunculaceae | 0 | 5 | 8 | Nam | |
|
| Rosa rugosa | wrinkled rose | Rosaceae | 0 | 6 | 9 | As | |
| Rudbeckia triloba | brown eyed Susan | Asteraceae | 321 | 6 | 10 | N | thin-leaf coneflower |
| Ruellia humilis | glade wild petunia | Acanthaceae | 252 | 5 | 7 | N | ruellia,fringeleaf wild petunia |
| Rumex acetosella | sheep sorrel | Polygonaceae | 62 | 4.3 | 7 | Eu, A | |
| Rumex crispus | curly dock | Polygonaceae | 62 | 4.3 | 5 | Eu | |
| Rumex obtusifolius | broadleaf dock | Polygonaceae | 5.4 | 6 | Eu | ||
|
| Rumex patientia | patience dock | Polygonaceae | 0 | 5 | 6 | Eu | |
|
| Rumex verticillatus | water dock | Polygonaceae | N | swamp dock | |||
| Sambucus canadensis | elderberry | Caprifoliaceae | 268 | 5.4 | 8 | N | |
| Saxifraga virginiensis | early saxifrage | Saxifragaceae | 114 | 3.2 | 5.1 | N | |
|
| Scrophularia marilandica | figwort | Scrophulariaceae | 247 | 7 | 8 | N | |
| Sedum pulchellum | pink stonecrop | Crassulaceae | 108 | 4.3 | 7.2 | N | sedum,widow's cross |
| Sedum ternatum | white stonecrop | Crassulaceae | 108 | 4.2 | 5.3 | N | rock cress sedum,woodland stonecrop, mountain stonecrop |
| Sherardia arvensis | blue field madder | Rubiaceae | 265 | 4.1 | 8 | Eu | |
|
| Sicyos angulatus | oneseed burr cucumber | Cucurbitaceae | 0 | 6 | 9 | N | |
|
| Sida spinosa | prickly mallow | Malvaceae | 70 | 7 | 10 | Tr | |
| Silene virginica | fire pink | Caryophyllaceae | 58 | 4.2 | 6.2 | N | |
| Silphium perfoliatum | cup plant | Asteraceae | 325 | 7.3 | 9.2 | N | |
|
| Silphium trifoliatum | whorled rosinweed | Asteraceae | 326 | 7.3 | 9.3 | N | |
|
| Sisymbrium officinale | hedge mustard | Brassicaceae | 0 | 5 | 10 | Eu | |
| Solanum carolinense | horse nettle | Solanaceae | 198 | 6.1 | 9.1 | N | Carolina horsenettle |
|
| Solidago caesia | wreath goldenrod | Asteraceae | 327 | 8 | 10 | N | blue stem,axillary goldenrod |
| Solidago canadensis | Canada goldenrod | Asteraceae | 329 | 7 | 9 | N | common goldenrod |
|
| Solidago erecta | erect goldenrod | Asteraceae | 327 | 8 | 10 | N | |
|
| Solidago ulmifolia | elm leaved goldenrod | Asteraceae | 330 | 8 | 10 | N | |
| Sonchus asper | spiny sow thistle | Asteraceae | 5.1 | 11 | Eu | prickly sow thistle | |
| Spigelia marilandica | Indian pink | Loganiaceae | 184 | 5.3 | 6 | N | woodland pinkroot |
|
| Spiranthes tuberosa | little ladies' tresses | Orchidaceae | 406 | 7 | 9 | N | tuberous ladies' tresses,pearl twist |
| Stellaria media | common chickweed | Caryophyllaceae | 59 | 3.2 | 4.4 | Eu | * |
| Stellaria pubera | giant chickweed | Caryophyllaceae | 59 | 4.1 | 5.3 | N | star chickweed |
| Taraxacum officinale | dandelion | Asteraceae | 331 | 3.1 | 10.3 | Eu,As | * |
|
| Thlaspi arvense | penny cress | Brassicaceae | 0 | 4 | 6 | Eu,NA | |
| Tiarella cordifolia | heart leaf foam flower | Saxifragaceae | 115 | 4.4 | 6.1 | N | |
| Tipularia discolor | cranefly orchid | Orchidaceae | 408 | 7 | 8 | N | |
| Tradescantia subaspera | wide leaved spiderwort | Commelinaceae | 343 | 5.3 | 9.2 | N | zigzag spiderwort,harsh spiderwort |
| Tradescantia virginiana | Virginia spiderwort | Commelinaceae | 4 | 5.2 | 7 | N | |
|
| Tragopogon pratensis | showy yellow goatsbeard | Asteraceae | 331 | 5 | 8 | Eu | Jack-go-to-bed-at-noon |
| Trifolium dubium | least hop trefoil | Fabaceae | 142 | 4.3 | 10 | Eu | least hop clover,suckling clover |
|
| Trifolium incarnatum | crimson clover | Fabaceae | 142 | 5 | 8 | Eu | |
| Trifolium pratense | red clover | Fabaceae | 143 | 4.4 | 8 | Eu | |
| Trifolium repens | white clover | Fabaceae | 143 | 4.1 | 7.4 | Eu,As | |
| Trillium cuneatum | toadshade trillium | Liliaceae | 372 | 3.3 | 5 | N | |
| Trillium flexipes | white trillium | Liliaceae | 377 | 4.1 | 5.3 | N | * |
| Trillium recurvatum | prairie trillium | Liliaceae | 374 | 4.2 | 4 | N | bloody butcher |
| Trillium sessile | sessile trillium | Liliaceae | 375 | 3.3 | 4.4 | N | |
| Trillium stamineum | twisted petal trillium | Liliaceae | 375 | 3 | 4 | N | |
| Triodanis perfoliata | Venus' looking glass | Campanulaceae | 259 | 4.4 | 8 | N | Specularia perfoliata, clasping Venus' looking glass |
| Urtica chamaedryoides | stinging nettle | Urticaceae | 0 | 5 | 6 | N | |
| Verbascum blattaria | moth mullein | Scrophulariaceae | 247 | 5.2 | 7.4 | Eu | |
| Verbascum thapsus | common mullein | Scrophulariaceae | 248 | 5.4 | 8.4 | Eu | |
|
| Verbena hastata | blue vervain | Verbenaceae | 215 | 6 | 9 | N | |
| Verbena simplex | narrow leaf vervain | Verbenaceae | 215 | 5.2 | 8.3 | N | narrow leaved vervain |
| Verbena urticifolia | white vervain | Verbenaceae | 215 | 7.2 | 8.4 | N | * |
| Verbesina virginica | white crownbeard | Asteraceae | 333 | 7.3 | 10 | N | frostweed |
| Veronica hederifolia | ivy leaf speedwell | Scrophulariaceae | 248 | 4.3 | 5 | Eu | ivy leaved speedwell |
| Veronica persica | bird's eye speedwell | Scrophulariaceae | 249 | 3.4 | 8 | As | |
| Veronica serpyllifolia | thyme leaved speedwell | Scrophulariaceae | 0 | 4 | 7 | Eu | |
| Vicia caroliniana | wood vetch | Fabaceae | 144 | 4.2 | 5.2 | N | white vetch, Carolina vetch |
| Vinca minor | common periwinkle | Apocynaceae | 189 | 3.3 | 5.4 | Eu | vinca,periwinkle, myrtle |
| Viola canadensis | white violet | Violaceae | 73 | 4 | 7 | N | |
| Viola sororia | common blue violet | Violaceae | 80 | 3.3 | 6 | N | |
| Viola striata | striped cream violet | Violaceae | 81 | 4.4 | 6 | N | |
| Vitis vulpina | frost grape | Vitaceae | 5.2 | 6 | N | winter grape | |
| Xanthium strumarium | cocklebur | Asteraceae | 0 | 8 | 11 | N |