PCA's Alien Plant Working Group Least Wanted: Alien Plant Invaders of Natural Areas

Fact Sheets for Herbaceous Plants

Goutweed (Aegopodium podagraria)
Garlic mustard
(Alliaria petiolata)

Giant reed (Arundo donax)
Musk thistle (Carduus nutans)
Asiatic sand sedge (Carex kobomugi)

Yellow starthistle (Centaurea solstitialis)
Spotted knapweed (Centaurea stoebe ssp. micranthos, previously C. biebersteinii)
Canada thistle (Cirsium arvense)
Leafy spurge (Euphorbia esula)
Japanese knotweed (Fallopia japonica)
West Indian marsh grass (Hymenachne amplexicaulis)
Cogon grass (Imperata cylindrica)
Perennial pepperweed (Lepidium latifolium)
Chinese lespedeza (Lespedeza cuneata)
Purple loosestrife (Lythrum salicaria)
Japanese stiltgrass
(Microstegium vimineum)

Eurasian watermilfoil (Myriophyllum spicatum)
Burma reed (Neyraudia reynaudiana)
Fountain grass (Pennisetum setaceum)
Common reed (Phragmites australis)
Fig buttercup (Ranunculus ficaria)Updated
Annual bastard-cabbage (Rapistrum rugosum)
Tall fescue (Schedonorus phoenix, previously Lolium arundinaceum)
Smooth cordgrass (Spartina alterniflora)
Common mullein (Verbascum thapsus)


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Last updated: 25-Feb-2010