Plant species native to Ontario according to the Database of Vascular Plants of Canada (VASCAN) https://data.canadensys.net/vascan/search -Most of the offerings on this site are native to Ontario, any that are not are clearly noted in the species description
Actaea racemosa, Black Snakeroot

Actaea racemosa, Black Snakeroot
Agastache foeniculum, Anise Hyssop

Agastache foeniculum, Anise Hyssop
Agastache nepetoides, Yellow Giant Hyssop

Agastache nepetoides, Yellow Giant Hyssop
Agastache scrophulariifolia, Purple Giant Hyssop

Agastache scrophulariifolia, Purple Giant Hyssop
Agrimonia gryposepala, Tall Hairy Agrimony

Agrimonia gryposepala, Tall Hairy Agrimony
Allium cernuum, Nodding Onion

Allium cernuum, Nodding Onion
Allium stellatum, Prairie Onion

Allium stellatum, Prairie Onion
Amorpha canescens, Downy False Indigo

Amorpha canescens, Downy False Indigo

Anaphalis margaritacea, Pearly Everlasting

Anaphalis margaritacea, Pearly Everlasting
Andropogon gerardii, Big Bluestem

Andropogon gerardii, Big Bluestem
Anemonastrum canadense, Canada Anemone 

Anemonastrum canadense, Canada Anemone 
Anemone parviflora, Small-flowered Anemone

Anemone parviflora, Small-flowered Anemone
Anemone virginiana, Thimbleweed

Anemone virginiana, Thimbleweed
Antennaria neglecta, Field pussytoes

Antennaria neglecta, Field pussytoes
Aquilegia canadensis, Wild Columbine

Aquilegia canadensis, Wild Columbine
Artemisia ludoviciana, Silver Wormwood 

Artemisia ludoviciana, Silver Wormwood 
Asclepias exaltata, Poke Milkweed

Asclepias exaltata, Poke Milkweed
Asclepias hirtella, Tall Green Milkweed

Asclepias hirtella, Tall Green Milkweed
Asclepias incarnata, Pink Swamp Milkweed

Asclepias incarnata, Pink Swamp Milkweed
Asclepias sullivantii, Prairie Milkweed

Asclepias sullivantii, Prairie Milkweed

Asclepias syriaca, Common Milkweed

Asclepias syriaca, Common Milkweed
Asclepias tuberosa, Orange Butterfly Weed

Asclepias tuberosa, Orange Butterfly Weed
Asclepias verticillata, Whorled Milkweed

Asclepias verticillata, Whorled Milkweed
Astragalus canadensis, Canada Milk Vetch

Astragalus canadensis, Canada Milk Vetch
Baptisia tinctoria, Small Yellow Wild Indigo

Baptisia tinctoria, Small Yellow Wild Indigo
Bidens cernua, Nodding Beggarticks

Bidens cernua, Nodding Beggarticks
Bidens trichosperma, Crowned Beggarticks

Bidens trichosperma, Crowned Beggarticks
Blephilia ciliata, Downy Wood Mint

Blephilia ciliata, Downy Wood Mint
Blephilia hirsuta, Hairy Wood Mint

Blephilia hirsuta, Hairy Wood Mint
Blitum capitatum, Strawberry-Blite

Blitum capitatum, Strawberry-Blite
Boehmeria cylindrica, Smallspike False Nettle

Boehmeria cylindrica, Smallspike False Nettle

Bouteloua curtipendula, Side-Oats Grama

Bouteloua curtipendula, Side-Oats Grama
Bromus pubescens, Hairy Woodland Brome

Bromus pubescens, Hairy Woodland Brome
Calamagrostis canadensis, Canadian Bluejoint

Calamagrostis canadensis, Canadian Bluejoint
Camassia scilloides, Eastern Camas

Camassia scilloides, Eastern Camas

Campanula rotundifolia, Bluebell of Scotland

Campanula rotundifolia, Bluebell of Scotland
Carex muskingumensis, Palm Sedge

Carex muskingumensis, Palm Sedge

Carex pensylvanica, Pennsylvania Sedge

Carex pensylvanica, Pennsylvania Sedge
Carex radiata, Eastern Star Sedge

Carex radiata, Eastern Star Sedge

Carex sprengelii, Long-beaked Sedge

Carex sprengelii, Long-beaked Sedge

Carex vulpinoidea, Brown Fox Sedge 

Carex vulpinoidea, Brown Fox Sedge 

Ceanothus americanus, New Jersey Tea

Ceanothus americanus, New Jersey Tea
Cephalanthus occidentalis, Eastern Buttonbush

Cephalanthus occidentalis, Eastern Buttonbush
Cercis canadensis, Canada Redbud

Cercis canadensis, Canada Redbud
Chamaenerion angustifolium, Fireweed 

Chamaenerion angustifolium, Fireweed 
Chasmanthium latifolium, Northern Sea Oats

Chasmanthium latifolium, Northern Sea Oats
Chelone glabra, White Turtlehead

Chelone glabra, White Turtlehead
Cinna arundinacea, Stout Woodreed

Cinna arundinacea, Stout Woodreed

Clematis virginiana, Virginia Clematis

Clematis virginiana, Virginia Clematis
Clinopodium vulgare, Wild Basil

Clinopodium vulgare, Wild Basil
Coreopsis lanceolata, Lance-leaved Tickseed

Coreopsis lanceolata, Lance-leaved Tickseed
Coreopsis tripteris, Tall Tickseed

Coreopsis tripteris, Tall Tickseed

Cryptotaenia canadensis, Canadian Honewort

Cryptotaenia canadensis, Canadian Honewort
Dalea purpurea, Purple Prairie Clover

Dalea purpurea, Purple Prairie Clover
Danthonia spicata, Poverty Oat Grass

Danthonia spicata, Poverty Oat Grass
Desmodium canadense, Showy Tick Trefoil

Desmodium canadense, Showy Tick Trefoil
Desmodium paniculatum, Panicled Tick Trefoil 

Desmodium paniculatum, Panicled Tick Trefoil 

Doellingeria umbellata, Flat-top White Aster

Doellingeria umbellata, Flat-top White Aster
Elymus canadensis, Canada Wild Rye 

Elymus canadensis, Canada Wild Rye 

Elymus hystrix, Bottlebrush Grass 

Elymus hystrix, Bottlebrush Grass 

Elymus virginicus, Virginia Wild Rye

Elymus virginicus, Virginia Wild Rye
Epilobium ciliatum, Northern Willowherb

Epilobium ciliatum, Northern Willowherb
Eragrostis spectabilis, Purple Lovegrass

Eragrostis spectabilis, Purple Lovegrass
Erigeron annuus, Annual Fleabane

Erigeron annuus, Annual Fleabane
Erigeronium canadensis, Annual Horseweed

Erigeronium canadensis, Annual Horseweed
Erigeron pulchellus, Robin's Plantain

Erigeron pulchellus, Robin's Plantain
Erigeron strigosus, Daisy Fleabane

Erigeron strigosus, Daisy Fleabane
Eupatorium perfoliatum, Common Boneset

Eupatorium perfoliatum, Common Boneset
Euphorbia corollata, Flowering Spurge

Euphorbia corollata, Flowering Spurge
Eurybia divaricata, White Wood Aster

Eurybia divaricata, White Wood Aster
Eurybia macrophylla, Bigleaf Aster

Eurybia macrophylla, Bigleaf Aster

Euthamia graminifolia, Grass-leaved Goldenrod

Euthamia graminifolia, Grass-leaved Goldenrod
Eutrochium maculatum, Spotted Joe-Pye weed

Eutrochium maculatum, Spotted Joe-Pye weed

Eutrochium purpureum, Sweet Joe Pye Weed 

Eutrochium purpureum, Sweet Joe Pye Weed 
Festuca subverticillata, Nodding Fescue

Festuca subverticillata, Nodding Fescue

Fragaria virginiana, Virginia Strawberry

Fragaria virginiana, Virginia Strawberry
Galium boreale, Northern Bedstraw 

Galium boreale, Northern Bedstraw 

Galium concinnum, Shining Bedstraw 

Galium concinnum, Shining Bedstraw 

Gentiana andrewsii, Closed Bottle Gentian

Gentiana andrewsii, Closed Bottle Gentian
Gentianella quinquefolia, Stiff Gentian

Gentianella quinquefolia, Stiff Gentian
Gentianopsis crinita, Greater Fringed Gentian

Gentianopsis crinita, Greater Fringed Gentian
Geum rivale, Water Avens

Geum rivale, Water Avens
Geum triflorum, Prairie Smoke

Geum triflorum, Prairie Smoke
Gillenia trifoliata, Bowman's Root

Gillenia trifoliata, Bowman's Root
Glycyrrhiza lepidota, Wild Licorice

Glycyrrhiza lepidota, Wild Licorice
Helenium autumnale, Common Sneezeweed

Helenium autumnale, Common Sneezeweed
Heuchera richardsonii, Prairie Alumroot 

Heuchera richardsonii, Prairie Alumroot 

Hibiscus moscheutos, Swamp Rose-mallow

Hibiscus moscheutos, Swamp Rose-mallow

Houstonia longifolia, Longleaf Bluets 

Houstonia longifolia, Longleaf Bluets 

Hydrophyllum appendiculatum, Great Waterleaf

Hydrophyllum appendiculatum, Great Waterleaf

Hydrophyllum virginianum, Virginia Waterleaf

Hydrophyllum virginianum, Virginia Waterleaf
Hylodesmum glutinosum, Large Tick-Trefoil

Hylodesmum glutinosum, Large Tick-Trefoil
Hypericum ascyron subsp. pyramidatum, American Great St. John's-wort

Hypericum ascyron subsp. pyramidatum, American Great St. John's-wort
Hypericum prolificum, Shrubby St. John's Wort 

Hypericum prolificum, Shrubby St. John's Wort 
Hypericum punctatum, Spotted St. John's-wort

Hypericum punctatum, Spotted St. John's-wort
Koeleria macrantha, June Grass 

Koeleria macrantha, June Grass 

Lespedeza capitata, Round-headed Bush Clover

Lespedeza capitata, Round-headed Bush Clover

Lespedeza virginica, Slender Bush-Clover

Lespedeza virginica, Slender Bush-Clover

Liatris aspera, Button Blazing Star 

Liatris aspera, Button Blazing Star 

Liatris cylindracea, Slender Blazing Star 

Liatris cylindracea, Slender Blazing Star 
Liatris spicata, Dense Blazing Star

Liatris spicata, Dense Blazing Star

Linum lewisii, Wild Blue Flax

Linum lewisii, Wild Blue Flax

Lobelia cardinalis, Cardinal Flower

Lobelia cardinalis, Cardinal Flower
Lobelia inflata, Indian tobacco

Lobelia inflata, Indian tobacco

Lobelia siphilitica, Great Blue Lobelia

Lobelia siphilitica, Great Blue Lobelia
Lobelia spicata, Pale Spike Lobelia

Lobelia spicata, Pale Spike Lobelia
Ludwigia alternifolia, Seedbox

Ludwigia alternifolia, Seedbox

Lysimachia ciliata, Fringed Loosestrife

Lysimachia ciliata, Fringed Loosestrife
Lythrum alatum, Winged Loosestrife

Lythrum alatum, Winged Loosestrife

Mimulus ringens, Allegheny Monkeyflower

Mimulus ringens, Allegheny Monkeyflower

Mitella diphylla, Bishop’s Cap 

Mitella diphylla, Bishop’s Cap 
Monarda didyma, Red Beebalm

Monarda didyma, Red Beebalm

Monarda fistulosa, Wild Bergamot: Mid-height, Mid-season strain

Monarda fistulosa, Wild Bergamot: Mid-height, Mid-season strain
Monarda fistulosa, Wild Bergamot: Tall, Late

Monarda fistulosa, Wild Bergamot: Tall, Late
Monarda punctata, Spotted Beebalm

Monarda punctata, Spotted Beebalm
Muhlenbergia mexicana, Leafy Satin Grass

Muhlenbergia mexicana, Leafy Satin Grass

Nabalus albus, White Rattlesnakeroot 

Nabalus albus, White Rattlesnakeroot 
Oenothera biennis, Common Evening Primrose

Oenothera biennis, Common Evening Primrose

Oenothera fruticosa, Narrow-Leaved Evening-Primrose

Oenothera fruticosa, Narrow-Leaved Evening-Primrose

Oenothera pilosella, Prairie Sundrops

Oenothera pilosella, Prairie Sundrops
Osmorhiza claytonii, Sweet Cicely

Osmorhiza claytonii, Sweet Cicely
Osmorhiza longistylis, Aniseroot

Osmorhiza longistylis, Aniseroot

Packera aurea, Golden Groundsel

Packera aurea, Golden Groundsel
Panicum virgatum, Switch Grass 

Panicum virgatum, Switch Grass 

Penstemon gracilis, Slender Beardtongue

Penstemon gracilis, Slender Beardtongue
Penstemon hirsutus, Hairy Beardtongue

Penstemon hirsutus, Hairy Beardtongue

Penthorum sedoides, Ditch Stonecrop

Penthorum sedoides, Ditch Stonecrop
Persicaria pensylvanica, Pennsylvania Smartweed

Persicaria pensylvanica, Pennsylvania Smartweed
Persicaria virginiana, Woodland Knotweed

Persicaria virginiana, Woodland Knotweed

Physocarpus opulifolius, Prairie Ninebark

Physocarpus opulifolius, Prairie Ninebark
Physostegia virginiana, Obedient Plant

Physostegia virginiana, Obedient Plant
Plantago rugelii, Blackseed Plantain

Plantago rugelii, Blackseed Plantain
Polanisia dodecandra, Clammy Weed

Polanisia dodecandra, Clammy Weed
Potentilla supina, Bushy Cinquefoil

Potentilla supina, Bushy Cinquefoil
Prunella vulgaris var. lanceolata, Lance-Leaved Self-Heal

Prunella vulgaris var. lanceolata, Lance-Leaved Self-Heal
Ptelea trifoliata, Common Hop-tree

Ptelea trifoliata, Common Hop-tree
Pycnanthemum incanum, Hoary Mountain Mint

Pycnanthemum incanum, Hoary Mountain Mint

Pycnanthemum verticillatum, Hairy Mountain-Mint

Pycnanthemum verticillatum, Hairy Mountain-Mint
Pycnanthemum virginianum, Virginia Mountain Mint

Pycnanthemum virginianum, Virginia Mountain Mint
Ratibida pinnata, Grey-headed Prairie Coneflower

Ratibida pinnata, Grey-headed Prairie Coneflower
Rosa setigera, Climbing Prairie Rose

Rosa setigera, Climbing Prairie Rose
Rudbeckia hirta, Black-Eyed-Susan

Rudbeckia hirta, Black-Eyed-Susan

Rudbeckia laciniata, Cut-leaved Coneflower

Rudbeckia laciniata, Cut-leaved Coneflower
Sanguinaria canadensis, Bloodroot

Sanguinaria canadensis, Bloodroot
Schizachyrium scoparium, Little Bluestem

Schizachyrium scoparium, Little Bluestem
Scrophularia marilandica, Carpenter's Figwort

Scrophularia marilandica, Carpenter's Figwort
Scutellaria lateriflora, Blue Skullcap

Scutellaria lateriflora, Blue Skullcap
Senna hebecarpa, Wild Senna

Senna hebecarpa, Wild Senna
Silene virginica, Fire Pink

Silene virginica, Fire Pink
Silphium laciniatum, Compass Plant

Silphium laciniatum, Compass Plant
Silphium terebinthinaceum, Prairie Dock

Silphium terebinthinaceum, Prairie Dock
Sisyrinchium montanum, Blue-eyed Grass

Sisyrinchium montanum, Blue-eyed Grass
Solidago altissima, Late or Tall Goldenrod

Solidago altissima, Late or Tall Goldenrod
Solidago bicolor, White goldenrod

Solidago bicolor, White goldenrod
Solidago caesia, Blue Stem Goldenrod

Solidago caesia, Blue Stem Goldenrod

Solidago flexicaulis, Zigzag goldenrod

Solidago flexicaulis, Zigzag goldenrod
Solidago gigantea, Giant Goldenrod

Solidago gigantea, Giant Goldenrod

Solidago juncea, Early Goldenrod

Solidago juncea, Early Goldenrod

Solidago macrophylla, Large-leaved Goldenrod

Solidago macrophylla, Large-leaved Goldenrod
Solidago nemoralis, Grey Goldenrod

Solidago nemoralis, Grey Goldenrod
Solidago ptarmicoides, Upland White Goldenrod 

Solidago ptarmicoides, Upland White Goldenrod 
Solidago rigida, Stiff-Leaved Goldenrod

Solidago rigida, Stiff-Leaved Goldenrod
Solidago rugosa, Wrinkleleaf Goldenrod

Solidago rugosa, Wrinkleleaf Goldenrod
Solidago squarrosa, Stout Goldenrod

Solidago squarrosa, Stout Goldenrod
Solidago uliginosa, Bog Goldenrod

Solidago uliginosa, Bog Goldenrod

Sorghastrum nutans, Yellow Indiangrass

Sorghastrum nutans, Yellow Indiangrass

Spiraea alba, White Meadowsweet

Spiraea alba, White Meadowsweet
Spiraea tomentosa, Steeplebush

Spiraea tomentosa, Steeplebush
Sporobolus heterolepis, Prairie Dropseed

Sporobolus heterolepis, Prairie Dropseed

Strophostyles helvola, Trailing Wild Bean

Strophostyles helvola, Trailing Wild Bean

Strophostyles leiosperma, Small Wild Bean 

Strophostyles leiosperma, Small Wild Bean 

Symphyotrichum ciliolatum, Lindley's Aster

Symphyotrichum ciliolatum, Lindley's Aster
Symphyotrichum cordifolium, Heart Leaved Aster

Symphyotrichum cordifolium, Heart Leaved Aster
Symphyotrichum ericoides, Heath Aster

Symphyotrichum ericoides, Heath Aster
Symphyotrichum laeve, Smooth Blue Aster

Symphyotrichum laeve, Smooth Blue Aster

Symphyotrichum lanceolatum, Panicled Aster

Symphyotrichum lanceolatum, Panicled Aster

Symphyotrichum lateriflorum, Calico Aster

Symphyotrichum lateriflorum, Calico Aster
Symphyotrichum novae-angliae, New England Aster

Symphyotrichum novae-angliae, New England Aster
Symphyotrichum oolentangiense, Sky Blue Aster

Symphyotrichum oolentangiense, Sky Blue Aster
Symphyotrichum pilosum, Frost Aster

Symphyotrichum pilosum, Frost Aster
Symphyotrichum puniceum, Purple-Stemmed Aster

Symphyotrichum puniceum, Purple-Stemmed Aster
Symphyotrichum urophyllum, Arrow-leaved Aster

Symphyotrichum urophyllum, Arrow-leaved Aster
Taenidia integerrima, Yellow Pimpernel

Taenidia integerrima, Yellow Pimpernel
Tephrosia virginiana, Virginia Goat's Rue 

Tephrosia virginiana, Virginia Goat's Rue 
Thalictrum pubescens, Tall Meadow Rue

Thalictrum pubescens, Tall Meadow Rue
Tradescantia ohiensis, Ohio Spiderwort

Tradescantia ohiensis, Ohio Spiderwort
Verbena hastata, Blue Vervain

Verbena hastata, Blue Vervain

Verbena simplex, Narrow-leaved Vervain

Verbena simplex, Narrow-leaved Vervain
Verbena stricta, Hoary Vervain

Verbena stricta, Hoary Vervain
Verbena urticifolia, White Vervain

Verbena urticifolia, White Vervain
Verbesina alternifolia, Wingstem

Verbesina alternifolia, Wingstem

Vernonia gigantea, Tall Ironweed

Vernonia gigantea, Tall Ironweed
Vernonia missurica, Missouri Ironweed

Vernonia missurica, Missouri Ironweed
Veronica serpyllifolia, Thyme-leaf Speedwell

Veronica serpyllifolia, Thyme-leaf Speedwell
Veronicastrum virginicum, Culver's root

Veronicastrum virginicum, Culver's root
Viola sororia, Wooly Blue Violet

Viola sororia, Wooly Blue Violet
Zizia aptera, Heart-leaf Golden Alexanders

Zizia aptera, Heart-leaf Golden Alexanders
Zizia aurea, Golden Alexanders 

Zizia aurea, Golden Alexanders 
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