Numerous plants have been introduced to Oregon, and many of them have become invasive species. The following are some of these species:
Picture | Scientific Name | Common Name |
---|---|---|
![]() | Ailanthus altissima | tree of heaven |
![]() | Ammophila arenaria | marram grass |
![]() | Brachypodium sylvaticum | false-brome |
![]() | Bromus tectorum | drooping brome |
![]() | Buddleja davidii | summer lilac |
![]() | Carduus acanthoides | spiny plumeless thistle |
![]() | Carduus nutans | musk thistle |
![]() | Centaurea cyanus | cornflower |
![]() | Cirsium vulgare | spear thistle |
![]() | Clematis vitalba | old man's beard |
![]() | Cortaderia jubata | purple pampas grass |
![]() | Crataegus monogyna | common hawthorn |
![]() | Cyperus rotundus | coco-grass |
Cytisus scoparius | common broom | |
![]() | Cytisus striatus | hairy-fruited broom |
![]() | Daphne laureola | spurge-laurel |
Egeria densa | large-flowered waterweed | |
![]() | Elaeagnus angustifolia | Russian olive |
![]() | Euphorbia esula | green spurge |
![]() | Euphorbia myrsinites | myrtle spurge |
![]() | Fallopia sachalinensis | giant knotweed |
![]() | Foeniculum vulgare | Florence fennel |
![]() | Genista monspessulana | French broom |
![]() | Geranium lucidum | shining cranesbill |
![]() | Geranium robertianum | herb-Robert |
Hedera helix | common ivy | |
![]() | Hedera hibernica | Atlantic ivy |
![]() | Ilex aquifolium | common holly |
Impatiens glandulifera | impatiens | |
![]() | Iris pseudacorus | yellow flag |
![]() | Kali tragus | prickly Russian thistle |
Koenigia polystachya | Himalayan knotweed | |
![]() | Linaria dalmatica | Balkan toadflax |
![]() | Linaria vulgaris | common toadflax |
Logfia gallica | narrowleaf cottonrose | |
![]() | Lythrum salicaria | purple loosestrife |
![]() | Phalaris arundinacea | reed canary grass |
![]() | Pilosella aurantiaca | fox-and-clubs |
![]() | Reynoutria japonica | Japanese knotweed |
Rubus armeniacus | Himalayan blackberry | |
![]() | Rubus laciniatus | cutleaf evergreen blackberry |
![]() | Salix × fragilis | crack willow |
![]() | Spartium | Spanish broom |
![]() | Tamarix ramosissima | saltcedar |
![]() | Torilis arvensis | spreading hedgeparsley |
![]() | Ulex | gorse |
Triadica sebifera is a tree native to eastern China and Taiwan. It is commonly called Chinese tallow, Chinese tallowtree, Florida aspen, chicken tree, gray popcorn tree, or candleberry tree.
Natural Resources Conservation Service (NRCS), formerly known as the Soil Conservation Service (SCS), is an agency of the United States Department of Agriculture (USDA) that provides technical assistance to farmers and other private landowners and managers.
Parthenocissus quinquefolia, known as Virginia creeper, Victoria creeper, five-leaved ivy, or five-finger, is a species of flowering vine in the grape family, Vitaceae. It is native to eastern and central North America, from southeastern Canada and the eastern United States west to Manitoba and Utah, and south to eastern Mexico and Guatemala.
Tanacetum parthenium, known as feverfew, is a flowering plant in the daisy family, Asteraceae. It may be grown as an ornament, and may be identified by its synonyms, Chrysanthemum parthenium and Pyrethrum parthenium.
Centranthus ruber, the red valerian, spur valerian, kiss-me-quick, fox's brush, devil's beard or Jupiter's beard, is a popular garden plant grown for its ornamental flowers.
Spartium junceum, known as Spanish broom, rush broom, or weaver's broom, it is a species of flowering plant in the family Fabaceae and the sole species in the genus Spartium. It is closely related to the other brooms.
Germplasm Resources Information Network or GRIN is an online USDA National Genetic Resources Program software project to comprehensively manage the computer database for the holdings of all plant germplasm collected by the National Plant Germplasm System.
Prosopis glandulosa, commonly known as honey mesquite, is a species of small to medium-sized, thorny shrub or tree in the legume family (Fabaceae).
Lonicera maackii, the Amur honeysuckle, is a species of honeysuckle in the family Caprifoliaceae that is native to temperate western Asia; specifically in northern and western China south to Yunnan, Mongolia, Primorsky Krai in southeastern Siberia, Korea, and, albeit rare there, central and northern Honshū, Japan.
Vulpia myuros, the annual fescue, or rat's-tail fescue, is an annual grass species of the genus Vulpia. It was probably originally native to Eurasia, but it can now be found nearly worldwide as a naturalized species.
Andropogon virginicus is a species of grass known by several common names, including broomsedge bluestem, yellowsedge bluestem and whiskey grass. It is native to the southeastern United States and as far north as the Great Lakes. It is known as an introduced species in California and Hawaii, where it is weedy.
Polypogon monspeliensis, commonly known as annual beard-grass or annual rabbitsfoot grass, is a species of grass. It is native to southern Europe, but it can be found today throughout the world as an introduced species and sometimes a noxious weed. It is an annual grass growing to heights between 5 centimeters and one meter. The soft, fluffy inflorescence is a dense, greenish, plumelike panicle, sometimes divided into lobes. The spikelets have long, thin, whitish awns, which give the inflorescence its texture.
Linaria dalmatica is a herbaceous plant native to western Asia and southeastern Europe that has become a weed in other areas. Its common names include Balkan toadflax, broadleaf toadflax, and Dalmatian toadflax.
Lespedeza cuneata is a species of flowering plant in the legume family known by the common names Chinese bushclover and sericea lespedeza, or just sericea. It is native to Asia and eastern Australia and it is present elsewhere as an introduced species and sometimes an invasive plant.