Invasive Species

Species Information

Photo Gallery

Invasive Species Photo Gallery
Non-Native Plant Species

Inclusion in the list does not imply any legal restrictions for these plants. However, these plants and some of their cultivars have the potential to invade wild areas, outcompete native species, and degrade habitats. Some species may even cause extensive ecological damage.

Click on a thumbnail to view photos available for that plant species, or view these plant species sorted by scientific name.

See also native plant species.

Photo of Amur honeysuckle by Wisconsin DNR.

Amur honeysuckle

Photo of Amur maple (CV) by Elizabeth J. Czarapata.

Amur maple (CV)

Photo of Aquatic forget-me-not by Elizabeth J. Czarapata.

Aquatic forget-me-not

Photo of Autumn olive by Elizabeth J. Czarapata.

Autumn olive

Photo of Baby's breath by Elizabeth J. Czarapata.

Baby's breath

Photo of Balfour's touch-me-not by Wisconsin DNR.

Balfour's touch-me-not

Photo of Bells honeysuckle by Wisconsin DNR.

Bells honeysuckle

Photo of Bird's-foot trefoil by Elizabeth J. Czarapata.

Bird's-foot trefoil

Photo of Bishop's gout-weed by Elizabeth J. Czarapata.

Bishop's gout-weed

Photo of Black (European) alder by Elizabeth J. Czarapata.

Black (European) alder

Photo of Black (European) alder by Elizabeth J. Czarapata.

Black (European) alder

Photo of black bindweed by Elizabeth J. Czarapata.

black bindweed

Photo of black jet-bead by Wisconsin DNR.

black jet-bead

Photo of Black swallow-wort by Wisconsin DNR.

Black swallow-wort

Photo of Blackberry lilly by Wisconsin DNR.

Blackberry lilly

Photo of Bladder campion by Wisconsin DNR.

Bladder campion

Photo of Bouncing-bet by Elizabeth J. Czarapata.

Bouncing-bet

Photo of Bull thistle by Elizabeth J. Czarapata.

Bull thistle

Photo of Burdock by Elizabeth J. Czarapata.

Burdock

Photo of Burning bush (CV) by Elizabeth J. Czarapata.

Burning bush (CV)

Photo of Butter & Eggs by Elizabeth J. Czarapata.

Butter & Eggs

Photo of Canada bluegrass by Elizabeth J. Czarapata.

Canada bluegrass

Photo of Canada thistle by Elizabeth J. Czarapata.

Canada thistle

Photo of Cattail hybrid by Elizabeth J. Czarapata.

Cattail hybrid

Photo of Celandine by Elizabeth J. Czarapata.

Celandine

Photo of cheat grass, downy brome by Elizabeth J. Czarapata.

cheat grass, downy brome

Photo of Chicory by Elizabeth J. Czarapata.

Chicory

Photo of Chinese elm by Wisconsin DNR.

Chinese elm

Photo of Chinese silvergrass, Eulalia by Wisconsin DNR.

Chinese silvergrass, Eulalia

Photo of chinese yam by Elizabeth J. Czarapata.

chinese yam

Photo of Climbing euonymus, winter creeper by Wisconsin DNR.

Climbing euonymus, winter creeper

Photo of Common buckthorn by Elizabeth J. Czarapata.

Common buckthorn

Photo of common comfrey by Wisconsin DNR.

common comfrey

Photo of Common St. John's-wort by Elizabeth J. Czarapata.

Common St. John's-wort

Photo of Common teasel by Elizabeth J. Czarapata.

Common teasel

Photo of Creeping bellflower by Elizabeth J. Czarapata.

Creeping bellflower

Photo of Creeping charlie by Elizabeth J. Czarapata.

Creeping charlie

Photo of Crown vetch by Elizabeth J. Czarapata.

Crown vetch

Photo of Curly dock by Wisconsin DNR.

Curly dock

Photo of Curly-leaf pondweed by Elizabeth J. Czarapata.

Curly-leaf pondweed

Photo of Cut-leaved teasel by Wisconsin DNR.

Cut-leaved teasel

Photo of Cypress spurge by Elizabeth J. Czarapata.

Cypress spurge

Photo of Dame's rocket by Elizabeth J. Czarapata.

Dame's rocket

Photo of English ivy by Elizabeth J. Czarapata.

English ivy

Photo of Eurasian water milfoil by Elizabeth J. Czarapata.

Eurasian water milfoil

Photo of European barberry by Elizabeth J. Czarapata.

European barberry

Photo of European frog-bit by Erich Haber.

European frog-bit

Photo of European marsh thistle by Steve Garske.

European marsh thistle

Photo of European mountain ash by Elizabeth J. Czarapata.

European mountain ash

Photo of Everlasting pea by Wisconsin DNR.

Everlasting pea

Photo of Field bindweed by Elizabeth J. Czarapata.

Field bindweed

Photo of Field, sheep sorrel by Elizabeth J. Czarapata.

Field, sheep sorrel

Photo of Flowering rush by Wisconsin DNR.

Flowering rush

Photo of Garden forget-me-not by Elizabeth J. Czarapata.

Garden forget-me-not

Photo of Garden-heliotrope by Elizabeth J. Czarapata.

Garden-heliotrope

Photo of Garlic mustard by Wisconsin DNR.

Garlic mustard

Photo of Giant hogweed by Steve Kenyon.

Giant hogweed

Photo of Giant knotweed by Wisconsin DNR.

Giant knotweed

Photo of Grecian foxglove by Wisconsin DNR.

Grecian foxglove

Photo of Hairy willow herb by Elizabeth J. Czarapata.

Hairy willow herb

Photo of hawk's beard by Wisconsin DNR.

hawk's beard

Photo of Helleborine orchid by Elizabeth J. Czarapata.

Helleborine orchid

Photo of hemp, marijuana by Wisconsin DNR.

hemp, marijuana

Photo of Hoary alyssum by Elizabeth J. Czarapata.

Hoary alyssum

Photo of honeysuckle by Elizabeth J. Czarapata.

honeysuckle

Photo of Hound's tongue by Wisconsin DNR.

Hound's tongue

Photo of Hydrilla by Kathy Hamel.

Hydrilla

Photo of Japanese barberry (CV) by Elizabeth J. Czarapata.

Japanese barberry (CV)

Photo of Japanese hedge-parsley by Wisconsin DNR.

Japanese hedge-parsley

Photo of Japanese honeysuckle by Elizabeth J. Czarapata.

Japanese honeysuckle

Photo of Japanese hops by David Eagan.

Japanese hops

Photo of Japanese knotweed by Elizabeth J. Czarapata.

Japanese knotweed

Photo of Japanese stilt grass by Elizabeth J. Czarapata.

Japanese stilt grass

Photo of Johnson grass by Elizabeth J. Czarapata.

Johnson grass

Photo of Kentucky bluegrass by Elizabeth J. Czarapata.

Kentucky bluegrass

Photo of Kudzu by Elizabeth J. Czarapata.

Kudzu

Photo of Leafy spurge by Elizabeth J. Czarapata.

Leafy spurge

Photo of Lesser celandine by Elizabeth J. Czarapata.

Lesser celandine

Photo of Lily-of-the-valley by Elizabeth J. Czarapata.

Lily-of-the-valley

Photo of Mile-a-minute vine by Elizabeth J. Czarapata.

Mile-a-minute vine

Photo of Moneywort by Elizabeth J. Czarapata.

Moneywort

Photo of Morrow's honeysuckle by Wisconsin DNR.

Morrow's honeysuckle

Photo of Morrow's honeysuckle by Wisconsin DNR.

Morrow's honeysuckle

Photo of Mullein by Elizabeth J. Czarapata.

Mullein

Photo of Multiflora rose by Elizabeth J. Czarapata.

Multiflora rose

Photo of Musk thistle by Elizabeth J. Czarapata.

Musk thistle

Photo of Narrow-leaf cattail by Elizabeth J. Czarapata.

Narrow-leaf cattail

Photo of Nipplewort by Wisconsin DNR.

Nipplewort

Photo of Norway maple (CV) by Kelly Kearns.

Norway maple (CV)

Photo of Orange daylily by Elizabeth J. Czarapata.

Orange daylily

Photo of Orange hawkweed by Elizabeth J. Czarapata.

Orange hawkweed

Photo of orchard grass by Elizabeth J. Czarapata.

orchard grass

Photo of Oriental bittersweet by Wisconsin DNR.

Oriental bittersweet

Photo of Ox-eye daisy by Elizabeth J. Czarapata.

Ox-eye daisy

Photo of Pale swallow-wort by Wisconsin DNR.

Pale swallow-wort

Photo of Periwinkle by Elizabeth J. Czarapata.

Periwinkle

Photo of Phragmites, Common reed by Elizabeth J. Czarapata.

Phragmites, Common reed

Photo of Plumeless thistle by Elizabeth J. Czarapata.

Plumeless thistle

Photo of Poison hemlock by Wisconsin DNR.

Poison hemlock

Photo of Porcelain berry by Elizabeth J. Czarapata.

Porcelain berry

Photo of Purple loosestrife by Elizabeth J. Czarapata.

Purple loosestrife

Photo of Quackgrass by Elizabeth J. Czarapata.

Quackgrass

Photo of Queen Anne's-lace by Elizabeth J. Czarapata.

Queen Anne's-lace

Photo of Queen-of-the-meadow by Wisconsin DNR.

Queen-of-the-meadow

Photo of quick-weed by Wisconsin DNR.

quick-weed

Photo of Red clover by Elizabeth J. Czarapata.

Red clover

Photo of Reed canary grass (N) by Elizabeth J. Czarapata.

Reed canary grass (N)

Photo of Russian knapweed by Wisconsin DNR.

Russian knapweed

Photo of Russian olive by Wisconsin DNR.

Russian olive

Photo of Scotch pine by Elizabeth J. Czarapata.

Scotch pine

Photo of Sericea lespedeza by Wisconsin DNR.

Sericea lespedeza

Photo of Siberian elm by Elizabeth J. Czarapata.

Siberian elm

Photo of Siberian pea shrub by Elizabeth J. Czarapata.

Siberian pea shrub

Photo of Smooth brome by Elizabeth J. Czarapata.

Smooth brome

Photo of spearmint by Elizabeth J. Czarapata.

spearmint

Photo of Spotted knapweed by Elizabeth J. Czarapata.

Spotted knapweed

Photo of Spreading hedge parsley by Elizabeth J. Czarapata.

Spreading hedge parsley

Photo of Star-of-Bethlehem by Wisconsin DNR.

Star-of-Bethlehem

Photo of sweet violet by Wisconsin DNR.

sweet violet

Photo of Tall fescue by Elizabeth J. Czarapata.

Tall fescue

Photo of tall hawkweed by Wisconsin DNR.

tall hawkweed

Photo of tall hawkweed by Elizabeth J. Czarapata.

tall hawkweed

Photo of Tall, Canada goldenrod (N) by Elizabeth J. Czarapata.

Tall, Canada goldenrod (N)

Photo of Tansy (CV) by Elizabeth J. Czarapata.

Tansy (CV)

Photo of Tree-of-heaven by Elizabeth J. Czarapata.

Tree-of-heaven

Photo of tuberous sweet pea by Wisconsin DNR.

tuberous sweet pea

Photo of Water chestnut by Wisconsin DNR.

Water chestnut

Photo of Watercress by Elizabeth J. Czarapata.

Watercress

Photo of Wayfaring tree by Elizabeth J. Czarapata.

Wayfaring tree

Photo of white campion by Elizabeth J. Czarapata.

white campion

Photo of White clover by Elizabeth J. Czarapata.

White clover

Photo of White mulberry by Elizabeth J. Czarapata.

White mulberry

Photo of White poplar by Elizabeth J. Czarapata.

White poplar

Photo of White sweet-clover by Elizabeth J. Czarapata.

White sweet-clover

Photo of Wild chervil by Elizabeth J. Czarapata.

Wild chervil

Photo of Wild parnsip by Elizabeth J. Czarapata.

Wild parnsip

Photo of Wild/European Privet by Elizabeth J. Czarapata.

Wild/European Privet

Photo of Wineberry by John Randall.

Wineberry

Photo of Yellow iris by Wisconsin DNR.

Yellow iris

Photo of yellow sedum by Wisconsin DNR.

yellow sedum

Photo of Yellow sweet-clover by Elizabeth J. Czarapata.

Yellow sweet-clover

Last Revised: March 14, 2008