PCA's Alien Plant Working Group Least Wanted: Alien Plant Invaders of Natural Areas
Completed Fact Sheets. Alphabetized by Scientific Name

Plants

Goutweed (Aegopodium podagraria)
Tree-of-heaven
(Ailanthus altissima)
Fiveleaf akebia (Akebia quinata)
Silk tree (Albizia julibrissin)
Garlic mustard (Alliaria petiolata)
Porcelainberry (Ampelopsis brevipedunculata)
Giant reed (Arundo donax)
Japanese Barberry (Berberis thunbergii)
Paper Mulberry (Broussonetia papyrifera)
Musk thistle (Carduus nutans)
Asiatic sand sedge (Carex kobomugi)
Australian pine (Casuarina equisetifolia)
Oriental bittersweet (Celastrus orbiculatus)
Spotted knapweed (Centaurea biebersteinii)
Yellow starthistle (Centaurea solstitialis)
Canada thistle (Cirsium arvense)
Asiatic colubrina (Colubrina asiatica)
Carrotwood (Cupaniopsis anacardioides)
Black swallow-wort (Cynanchum louiseae)
Pale swallow-wort (Cynanchum rossicum)
Russian-olive
(Elaeagnus angustifolia)
Climbing euonymus (Euonymus fortunei)
Leafy spurge (Euphorbia esula)
English ivy (Hedera helix)
West Indian marsh grass (Hymenachne amplexicaulis)
Cogon grass (Imperata cylindrica)
Perennial pepperweed (Lepidium latifolium)
Chinese lespedeza (Lespedeza cuneata)
Tall fescue (Lolium arundinaceum)
Bush honeysuckles, exotic (Lonicera cultivars and species)
Japanese honeysuckle (Lonicera japonica)
Purple loosestrife (Lythrum salicaria)
Melaleuca (Melaleuca quinquenervia)
Chinaberry (Melia azedarach) New
Velvet tree (Miconia calvescens)
Japanese stiltgrass (Microstegium vimineum) Updated
Fire tree (Morella faya, previously Myrica faya)
Eurasian watermilfoil (Myriophyllum spicatum)
Burma reed (Neyraudia reynaudiana)
Princess tree (Paulownia tomentosa)
Fountain grass (Pennisetum setaceum)
Mile-a-minute (Persicaria perfoliata)
Amur corktree (Phellodendron amurense)
Common reed (Phragmites australis)
Japanese knotweed (Polygonum cuspidatum)
White poplar (Populus alba)
Strawberry guava (Psidium cattleianum)
Kudzu (Pueraria montana var. lobata)
Lesser celandine (Ranunculus ficaria)
Annual bastard-cabbage (Rapistrum rugosum)
Common buckthorn (Rhamnus cathartica)
Black locust (Robinia pseudoacacia)
Multiflora rose (Rosa multiflora)
Yellow Himalayan raspberry (Rubus ellipticus)
Wineberry (Rubus phoenicolasius)
Japanese spiraea (Spiraea japonica)
Smooth cordgrass (Spartina alterniflora)
Salt cedar (Tamarix species)
Siberian elm (Ulmus pumila)
Common mullein (Verbascum thapsus)
Wisterias, exotic (Wisteria floribunda and sinensis)

General Educational

Weeds Gone Wild Brochure - Printable brochure - PDF (4.5 MB)
What the heck is an Invasive Plant? - Printable brochure - PDF (810 KB)
Other public outreach materials

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Comments, suggestions, and questions about the website should be directed to the webmaster.
http://www.nps.gov/plants/alien/fact.htm
Last updated: 21-Mar-2008