Invasive plants in Virginia are tracked through 2 genuinely different systems that carry very different legal weight, and according to the Virginia Department of Conservation and Recreation, the agency’s own Invasive Plant Species List, updated to 103 species in September 2024, is published purely for educational purposes and carries no regulatory authority on its own. A separate list maintained by the Virginia Department of Agriculture and Consumer Services designates a smaller set of true noxious weeds, and that classification does carry legal teeth, since state plant protection inspectors can stop the sale of a noxious weed at a nursery until the problem is resolved.
That gap between education and enforcement has real consequences, and according to Blue Ridge PRISM’s analysis of the DCR list, 48% of the plants documented as invasive in Virginia remain legally available for sale in the state’s nursery trade today. That’s changing, though only gradually: Virginia’s own invasive plant program confirms that starting in January 2027, state law will require retailers selling designated invasive plant species to post warning signage near the plant displays, a middle-ground approach between Virginia’s current educational-only list and an outright sales ban.
According to Virginia Mercury’s reporting on the issue, Virginia Tech invasive plant and weed science professor Jacob Barney noted that ornamental Japanese barberry, first introduced to the United States in 1875, remains “still incredibly valuable” in the landscaping and nursery trade despite research linking dense barberry thickets to a higher abundance of ticks carrying Lyme disease. What follows covers 28 invasive plants in Virginia, along with where each one grows and the data behind its spread.
Tree-of-Heaven
Tree-of-heaven produces large, compound leaves and grows remarkably fast even by invasive tree standards, with root sprouts capable of reaching several feet in their very first year alone. It’s ranked “high” on Virginia’s Invasive Plant List, reflecting the significant threat it poses to the state’s forests and natural communities, and it also serves as the preferred host plant for the invasive spotted lanternfly.
It grows throughout much of Virginia, particularly along roadsides, rail corridors, and disturbed urban lots, and its rapid, suckering growth makes it notoriously difficult to eliminate through cutting alone.
Garlic Mustard
Garlic mustard produces small clusters of white, 4-petaled flowers atop a biennial plant whose roots release chemicals into the surrounding soil that actively suppress the germination of nearby native plants. A single mother plant can produce thousands of seeds that remain viable in the soil for years.
It grows throughout wooded areas across much of Virginia, threatening spring ephemerals that can’t compete with its early, aggressive growth.
Alligator Weed
Alligator weed produces small white flower clusters on a plant capable of growing in wet soil, shallow water, or fully submerged conditions, giving it an unusually broad range of habitats it can invade. Its dense mats can clog irrigation channels and waterways.
It grows throughout wetland and waterway margins in parts of Virginia, spreading readily from even small fragmented pieces of stem or root.
Porcelain Berry
Porcelain berry produces small, inconspicuous greenish-white flower clusters followed by strikingly colored blue, purple, and turquoise berries on an aggressively twining vine. Its vigorous growth can smother shrubs and small trees within just a few growing seasons.
It grows throughout Virginia, particularly along forest edges and disturbed ground, forming dense tangles that block light from the native vegetation growing beneath it.
Japanese Sand Sedge
Japanese sand sedge produces stiff, wiry foliage on a coastal dune grass that spreads aggressively through underground rhizomes, forming dense mats that displace the native dune vegetation that helps stabilize Virginia’s beaches. Its rapid spread along the coast has made it a significant concern for shoreline habitat.
It grows along coastal dunes in eastern Virginia, altering the natural dune structure that native beach grasses are adapted to maintain.
Oriental Bittersweet
Oriental bittersweet produces a woody, twining vine capable of climbing 60 feet or more into a tree canopy, eventually girdling and killing its host through a combination of constriction and accumulated weight. Its bright orange-yellow seed capsules split open in fall to reveal striking red seeds, a display that’s ironically helped spread the vine further since it remains popular for autumn wreaths.
It grows throughout forest edges and disturbed woodland across Virginia, increasingly displacing the considerably less aggressive American bittersweet native to the same region.
Spotted Knapweed
Spotted knapweed produces grayish-green, deeply divided leaves and thistle-like purple-pink flower heads ringed with distinctive black-tipped bracts. It releases an allelopathic compound from its roots that suppresses the germination and growth of neighboring plants.
It grows throughout dry fields and roadsides across parts of Virginia, capable of forming dense monocultures on disturbed, sunny ground.
Wavyleaf Basket Grass
Wavyleaf basket grass produces distinctively wavy-edged leaf blades on a shade-tolerant grass capable of forming a dense carpet across an entire forest floor within just a few seasons. Its sticky seeds cling readily to clothing, fur, and boots, making hikers an unintentional but effective way the grass spreads to new forest locations.
It grows in shaded forest understories in parts of Virginia, threatening native woodland wildflowers that can’t compete with its dense mat-forming growth.
English Ivy
English ivy is an evergreen climbing and groundcover vine that spreads via both seed and rooting stems, planted for decades as low-maintenance landscaping before its invasive woodland behavior became widely recognized. Once a vine climbs high enough into full sun, its leaf shape changes from the familiar lobed juvenile form to a simpler, unlobed adult leaf capable of flowering and fruiting.
It grows throughout much of Virginia as both a cultivated groundcover and an escaped woodland invasive, forming a dense mat capable of smothering garden perennials and entire mature trees alike.
Kudzu
Kudzu produces large, 3-lobed leaves on vigorous vines capable of growing 60 to 100 feet in a single season. Its massive underground tubers store enough energy to let the vine regrow persistently even after years of cutting and herbicide treatment.
It grows throughout much of Virginia, particularly in the southern and central parts of the state, smothering trees and structures beneath its dense growth.
Autumn Olive
Autumn olive produces bright green leaves that are distinctively silver underneath, with strongly fragrant cream to pale yellow flowers blooming each spring. Because it fixes atmospheric nitrogen through its root system, it can alter soil chemistry in ways that favor its own continued spread over native vegetation.
It grows throughout old fields, roadsides, and disturbed ground statewide, and its abundant, easily dispersed berries have made it one of the more difficult shrubs to eliminate once established.
Japanese Barberry
Japanese barberry produces small, oval leaves and bright red berries on a dense, spiny shrub first introduced to the United States in 1875 and still widely sold in the landscaping trade today. Research has linked dense barberry thickets to a higher abundance of ticks carrying Lyme disease, since the humid microclimate beneath the shrub favors both tick survival and their small mammal hosts.
It grows throughout woodlands and forest edges across much of Virginia, forming dense stands that few native plants can successfully compete against.
Wintercreeper
Wintercreeper is an evergreen, woody vine with aerial roots that let it climb into tree canopies, forming dense carpets on the forest floor that can overtop and shade out the trees it grows beneath. Its waxy leaves make it notably difficult to control even with herbicide application.
It grows throughout residential landscapes and adjacent woodlands statewide, having escaped widely from ornamental groundcover plantings into surrounding natural areas.
Giant Hogweed
Giant hogweed produces enormous, deeply lobed leaves and a thick, hollow stem marked with distinctive purple blotches, capable of towering well over head height. Its sap contains compounds that react violently with sunlight on exposed skin, causing severe burns and blistering, and it’s classified as a federal noxious weed in addition to being a Virginia concern.
It was first found in Virginia in 2018, and it’s frequently confused with poison hemlock, wild carrot, and other similar-looking plants, making careful identification essential before any attempted removal.
Tropical Soda Apple
Tropical soda apple produces spiny stems and leaves along with round, yellow fruit resembling a small, mottled tomato, classified as a true noxious weed in Virginia rather than just an educational listing. Cattle and wildlife readily eat the ripe fruit and pass the seeds unharmed, spreading the plant efficiently across pastures.
It grows in scattered locations throughout parts of Virginia, and state plant protection inspectors can halt nursery sales of the species wherever it’s discovered in the commercial trade.
Water Spinach
Water spinach, also called kangkong, produces hollow, trailing stems and arrow-shaped leaves, classified as a noxious weed in Virginia despite being a widely eaten vegetable in several Asian cuisines. Its aggressive growth in warm, wet conditions and potential to clog waterways led to its restricted legal status.
It’s found in scattered locations throughout parts of Virginia, particularly in and around agricultural areas.
Multiflora Rose
Multiflora rose produces arching, thorny canes lined with clusters of small white flowers, forming dense, nearly impassable thickets wherever it’s left unmanaged. A single mature shrub can produce close to 500,000 seeds in a year, widely dispersed by birds through fall and winter.
It grows throughout pastures, fence rows, and forest edges statewide, despite once being recommended by conservation agencies for erosion control and living fences.
Japanese Knotweed
Japanese knotweed produces hollow, bamboo-like stems that can push through cracks in pavement and foundations as a colony expands, spreading through an extensive underground rhizome network that extends well beyond the visible canes. Even a small fragment of rhizome left in the soil can regenerate an entirely new colony the following season.
It grows in scattered infestations throughout Virginia, particularly along riverbanks, roadsides, and disturbed urban lots.
Purple Loosestrife
Purple loosestrife produces tall spikes of vivid magenta-purple flowers each summer, a display so attractive that it was originally introduced to gardens before its aggressive wetland behavior became apparent. A single mature plant can produce well over a million seeds in a season.
It grows throughout marshes and wetland margins statewide, forming dense monocultures that crowd out the native plants waterfowl depend on.
Callery Pear
Callery pear, widely sold under ornamental cultivar names including Bradford pear, produces abundant white spring flowers followed by small, hard fruit that birds readily eat and disperse into surrounding natural areas. Its thorny, fast-growing wild seedlings form dense thickets in old fields and forest edges, a genuinely different plant than the tidy ornamental form sold at nurseries.
It’s an increasingly documented concern throughout Virginia, prompting several neighboring states to begin restricting its sale entirely.
Mile-a-Minute Vine
Mile-a-minute vine produces small clusters of tiny white flowers followed by distinctive metallic blue berries on a trailing, barbed vine capable of growing several inches per day. Its seeds can remain dormant in the soil for up to 6 years, and its recurved, barb-covered stems make it genuinely uncomfortable to pull by hand.
It grows throughout much of Virginia, favoring moist soil and full sun along forest edges, wetlands, and streambanks.
Amur Honeysuckle
Amur honeysuckle leafs out earlier in spring and holds its leaves later into fall than most native shrubs, giving it a considerable head start in competing for available sunlight. Its abundant red berries are readily eaten and spread by birds, allowing new infestations to establish well beyond any original planting.
It grows throughout woodland edges and disturbed areas statewide, often forming dense understory thickets that block light from native tree seedlings.
Common Privet
Common privet produces small, tubular white flowers with a notably strong scent, followed by small dark berries readily spread by birds into adjacent natural areas. Its dense, twiggy growth habit made it an enormously popular hedging plant for decades before its invasive spread became widely recognized.
It grows throughout residential and disturbed areas across much of Virginia, forming dense thickets in forest understories once it escapes cultivation.
Chinese Wisteria
Chinese wisteria produces long, cascading clusters of fragrant purple or white flowers on an aggressively twining, woody vine capable of girdling and eventually killing mature host trees. Its vigorous growth and abundant seed production have made it a significant forest health concern throughout much of its introduced range.
It grows throughout much of Virginia, forming dense canopies over native trees that can collapse entire sections of forest under the vine’s accumulated weight over time.
Common Buckthorn
Common buckthorn leafs out earlier in spring and holds its leaves later into fall than most native trees, giving it a considerable competitive advantage over the forest species it displaces. Its small, dark berries have a noticeable laxative effect on the birds and animals that eat them, which paradoxically helps spread its seeds more widely.
It grows extensively throughout woodlands and fence rows across parts of Virginia, forming dense understory thickets that shade out native tree seedlings.
Chinese Silvergrass
Chinese silvergrass, also called Japanese silver grass or miscanthus, produces tall, arching clumps of narrow foliage topped with feathery, silvery-pink plumes in late summer. Widely sold as an ornamental grass, it readily self-seeds into surrounding fields and roadsides well beyond its original planting.
It grows in scattered naturalized populations throughout Virginia, forming dense stands that displace native meadow grasses and wildflowers.
Dame’s Rocket
Dame’s rocket produces clusters of fragrant, 4-petaled purple, pink, or white flowers on a tall biennial frequently mistaken for a native wildflower or garden phlox. Despite its attractive appearance, it spreads aggressively into woodland edges and has become a significant concern in several eastern states, including Virginia.
It grows throughout roadsides and woodland edges across much of Virginia, often included in wildflower seed mixes despite its documented invasive behavior once established outside a garden.
Norway Maple
Norway maple closely resembles the native sugar maple at a glance, distinguished most reliably by the milky sap that oozes from a broken leaf stem, a trait sugar maple entirely lacks. It casts notably dense shade that suppresses the growth of native wildflowers and tree seedlings beneath its canopy.
It grows throughout much of Virginia, planted extensively as a street and shade tree before its invasive tendencies in natural forest settings became fully understood.
Conclusion
Invasive plants in Virginia can spread through forests, wetlands, fields, roadsides, gardens, and other habitats. They may compete with native vegetation for sunlight, water, nutrients, and space, while some species can also change the structure and function of local ecosystems.
Learning to identify invasive plants is an important step in managing their spread. Early detection and regular monitoring can help locate new infestations before they become widely established, making control efforts more practical and effective.
Protecting Virginia’s native vegetation requires ongoing attention from homeowners, gardeners, land managers, and conservation groups. Choosing non-invasive plants, preventing the movement of seeds and plant material, and managing established populations can help preserve healthy and diverse habitats across the state.