Ontario Weeds

To browse by weed name, see the Ontario Weed Gallery Listing

To browse by family, see the Ontario Weed Gallery Families

Browse the Ontario Weeds Gallery: | 1 | 2 | 3 | 4 |

Click on the thumbnail or the weed name to view the larger picture.

Spurge Family (Euphorbiaceae)

Three-seeded mercury - Link to Ontario Weeds: Three-seeded Mercury
Three-seeded mercury

Hairy-stemmed spurge - Link to Ontario Weeds: Hairy-stemmed Spurge
Hairy-stemmed spurge

Spotted Spurge - Link to Ontario Weeds: Spotted Spurge
Spotted Spurge

Dentate spurge - Link to Ontario Weeds: Dentate Spurge
Dentate spurge

Petty spurge - Link to Ontario Weeds: Petty Spurge
Petty spurge

Nodding spurge - Link to larger picture of Nodding Spurge
Nodding spurge

Sun spurge - Link to Ontario Weeds: Sun Spurge
Sun spurge

Cypress spurge - Link to Ontario Weeds: Cypress Spurge
Cypress spurge

Leafy spurge - Link to Ontario Weeds: Leafy Spurge
Leafy spurge

Thyme-leaved spurge - Link to Ontario Weeds: Thyme-leaved Spurge
Thyme-leaved spurge

Cashew Family (Anacardiaceae)

Poison ivy - Link to Ontario Weeds: Poison Ivy
Poison ivy

Virginia creeper - Link to Ontario Weeds: Virginia Creeper
Virginia creeper

Poison sumac - Link to Ontario Weeds: Poison Sumac
Poison sumac

Staghorn sumac - Link to Ontario Weeds: Staghorn Sumac
Staghorn sumac

Buckthorn Family (Rhamnaceae)

European buckthorn - Link to Ontario Weeds: European Buckthorn
European buckthorn

Chokecherry - Link to Ontario Weeds: Chokeberry
Chokecherry

Mallow Family (Malvaceae)

Velvetleaf - Link to Ontario Weeds: Velvet Leaf
Velvetleaf

Common mallow - Link to Ontario Weeds: Common Mallow
Common mallow

Musk mallow - Link to Ontario Weeds: Musk Mallow
Musk mallow

Flower-of-an-hour - Link to Ontario Weeds: Flower-of-an-hour
Flower-of-an-hour

St. John's Wort Family (Hypericaeae)

St. John's wort - Link to Ontario Weeds: St. John's Wort
St. John's wort

Violet Family (Vialaceae)

Field violet - Link to Ontario Weeds: Field Violet
Field violet

Geranium Family (Geraniaceae)

Crane's Bill - Link to larger picture of Crane's Bill
Crane's Bill

Evening-Primrose Family (Onagraceae)

Yellow evening primrose - Link to Ontario Weeds: Yellow Evening Primrose
Yellow evening primrose

Loosetrife Family (Lythraceae)

Fringed loosestrife - Link to Ontario Weeds: Fringed Loosestrife
Fringed loosestrife

Purple loosestrife - Link to Ontario Weeds: Purple Loosestrife
Purple loosestrife

Carrot or Parsely Family (Umbelliferae)

Wild carrot - Link to Ontario Weeds: Wild Carrot
Wild carrot

Goutweed - Link to Ontario Weeds: Goutweed
Goutweed

Poison hemlock - Link to Ontario Weeds: Poison Hemlock
Poison hemlock

Water parsnip - Link to Ontario Weeds: Water Parsnip
Water parsnip

Angelica - Link to Ontario Weeds: Angelica
Angelica

Spotted water hemlock - Link to Ontario Weeds: Spotted Water Hemlock
Spotted water hemlock

Giant hogweed - Link to Ontario Weeds: Giant Hogweed
Giant hogweed

Wild parsnip - Link to Ontario Weeds: Wild Parsnip
Wild parsnip

Dogbane Family (Apocynaceae)

Spreading dogbane - Link to Ontario Weeds: Spreading Dogbane
Spreading dogbane

Hemp dogbane - Link to larger picture of Hemp Dogbane
Hemp dogbane

Clasping-leaved dogbane - Link to Ontario Weeds: Clasping-leaved Dogbane
Clasping-leaved dogbane

Tall water hemp - Link to Ontario Weeds: Tall Water Hemp
Tall water hemp

Milkweed Family (Asclepiadaceae)

Common milkweed - Link to Ontario Weeds: Common Milkweed
Common milkweed

Swamp milkweed - Link to Ontario Weeds: Swamp Milkweed
Swamp milkweed

Whorled milkweed - Link to Ontario Weeds: Whorled Milkweed
Whorled milkweed

Dog-strangling vine - Link to Ontario Weeds: Dog-strangling Vine
Dog-strangling vine

Morning-Glory Family (Convolvulaceae)

Field bindweed - Link to Ontario Weeds: Field Bindweed
Field bindweed

Hedge Bindweed - Link to Ontario Weeds: Hedge Bindweed
Hedge bindweed

Wild grape - Link to larger picture of Wild Grape
Wild grape

Dodder - Link to Ontario Weeds: Dodder
Dodder

Morning glory - Link to larger picture of Morning Glory
Morning glory

Primrose Family (Primulaceae)

Scarlet Pimpernel - Link to larger picture of Scarlet Pimpernel
Scarlet pimpernel

Teasel Family (Dipsacaceae)

Teasel - Link to Ontario Weeds: Teasel
Teasel

Borage Family (Boraginaceae)

Blueweed - Link to Ontario Weeds: Blueweed
Blueweed

Common comfrey - Link to larger picture of Common Comfrey
Common comfrey

Mint Family (Labiatae)

American Germander - Link to Ontario Weeds: American Germander
American Germander

Ground ivy - Link to Ontario Weeds: Ground Ivy
Ground ivy

Catnip - Link to Ontario Weeds: Catnip
Catnip

Heal-all - Link to Ontario Weeds: Heal-all
Heal-all

Hemp-nettle - Link to Ontario Weeds: Hemp-nettle
Hemp-nettle

Henbit - Link to Ontario Weeds: Henbit
Henbit

Motherwort - Link to Ontario Weeds: Motherwort
Motherwort

Marsh hedge-nettle - Link to Ontario Weeds: Marsh Hedge-nettle
Marsh hedge-nettle

Nettle Family (Urticaceae)

Stinging nettle - Link to larger picture of Stinging Nettle
Stinging nettle

Nightshade or Potato Family (Solanaceae)

Smooth ground-cherry - Link to Ontario Weeds: Smooth Ground-cherry
Smooth ground-cherry

Climbing nightshade - Link to Ontario Weeds: Climbing Nightshade
Climbing nightshade

Eastern black nightshade - Link to Ontario Weeds: Eastern Black Nightshade
Eastern black nightshade

Hairy nightshade - Link to Ontario Weeds: Hairy Nightshade
Hairy nightshade

Clammy ground cherry - Link to Ontario Weeds: Clammy Ground Cherry
Clammy ground cherry

Horse nettle - Link to Ontario Weeds: Horse Nettle
Horse nettle

Jimsonweed - Link to Ontario Weeds: Jimsonweed
Jimsonweed

Figwort or Snapdragon Family (Scrophulariaceae)

Common mullein - Link to Ontario Weeds: Common Mullein
Common mullein

Toadflax - Link to Ontario Weeds: Toadflax
Toadflax

Dwarf snapdragon - Link to Ontario Weeds: Dwarf Snapdragon
Dwarf snapdragon

Corn speedwell (Veronica) - Link to Ontario Weeds: Corn Speedwell
Corn speedwell (Veronica)

Creeping speedwell - Link to Ontario Weeds: Creeping speedwell
Creeping speedwell

Purslane speedwell (Veronica) - Link to Ontario Weeds: Purslane Speedwell
Purslane speedwell (Veronica)

Thyme-leaved speedwell (Veronica) - Link to Ontario Weeds: Thyme-leaved Speedwell - LInk to Ontario Weeds: Thyme-leaved speedwell
Thyme-leaved speedwell (Veronica)

Bird's-eye speedwell - Link to Ontario Weeds: Bird's-eye speedwell
Bird's-eye speedwell

Dalmatian toadflax - Link to Ontario Weeds: Dalmatian Toadflax
Dalmatian toadflax

Creeping speedwell - Link to Ontario Weeds: Creeping speedwell
Field speedwell

Plantain Family (Plantaginaceae)

Broad-leaved plantain - Link to Ontario Weeds: Broad-leaved Plantain
Broad-leaved plantain

Narrow-leaved plantain (Buckhorn plantain) - Link to Ontario Weeds: Narrow-leaved Plantain
Narrow-leaved plantain (Buckhorn plantain)

Madder Family (Rubiaceae)

Smooth bedstraw - Link to Ontario Weeds: Smooth Bedstraw
Smooth bedstraw

Cleavers - Link to Ontario Weeds: Cleavers
Cleavers

Browse the Ontario Weeds Gallery: | 1 | 2 | 3 | 4 |

Related Links


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca