Weed Reports were compiled from survey responses, and are available for all the species below. For each respondent, the reports include contact information, scope of infestation, factors that encourage/discourage invasion, monitoring methods, species/communities/habitats threatened, control methods and their success rates, and general comments. We encourage managers to network with each other to learn from each others experiences.

Disclaimer: Please note that this list should not be interpreted as an inclusive list of all wildland weeds. It is merely a list of those plants which were reported as weeds by a land manager of The Nature Conservancy. Most of these are non-native species, some are native that are invading because of other management practices (i.e. fire suppression). For more information about the species listed on our web site, refer to our important disclaimer page.

Acacia farnesiana		Lolium spp.
Acacia mearnsii		Lonicera japonica
Acacia melanoxylon		Lonicera maackii and/or L. tartarica
Acer negundo		Lotus corniculatus
Acer platanoides		Lupinus arboreus
Acroptilon repens		Lygodium japonicum
Aegilops cylindrica		Lysimachia nummularia
Agropyron cristatum		Lythrum salicaria
Agrostis capillaris		Lythrum virgatum
Agrostis gigantea		Maclura pomifera
Agrostis perennans		Marrubium vulgare
Agrostis stolonifera		Melia azedarach
Ailanthus altissima		Melilotus officinalis
Albizia julibrissin		Melinis minutiflora
Alliaria petiolata		Mentha arvensis
Alternanthera philoxeroides		Miconia calvescens
Ammophila arenaria		Microstegium vimineum
Amorpha fruticosa		Miscanthus sinensis
Andropogon virginicus		Morus rubra
Arctium minus		Myriophyllum spicatum
Ardisia crenata		Nicotiana glauca
Aronia melanocarpa		Olea europaea
Arrhenatherum elatius		Onopordum acanthium
Artemisia vulgaris		Panicum hemitomon
Arundo donax		Panicum maximum
Avena spp.		Panicum repens
Baccharis halimifolia		Parentucellia viscosa
Berberis thunbergii		Paspalum conjugatum
Berberis vulgaris		Paspalum dilatatum
Berberis sp.		Paspalum notatum
Bothriochloa ischaemum var. songarica		Paspalum urvillei
Brassica nigra		Passiflora suberosa
Briza maxima		Passiflora sp.
Bromus inermis		Pastinaca sativa
Bromus rubens		Pennisetum ciliare
Bromus sterilis		Phalaris arundinacea
Bromus tectorum		Phormium tenax
Bromus spp.		Phragmites australis
Broussonetia papyrifera		Phyllostachys aurea
Campsis radicans		Physocarpus sp.
Cardaria draba		Picea sitchensis
Cardaria draba ssp. chalepensis		Pinus elliottii
Cardaria sp.		Pinus patula
Carduus acanthoides		Pinus pinea
Carduus nutans		Pinus radiata
Carpobrotus edulis		Pinus rigida
Casuarina equisetifolia		Pinus taeda
Celastrus orbiculatus		Pinus thunbergiana
Celtis occidentalis		Poa compressa
Centaurea biebersteinii		Poa pratensis
Centaurea diffusa		Poaceae
Centaurea melitensis		Polygonum amphibium
Centaurea solstitialis		Polygonum cuspidatum
Centaurea spp.		Polygonum perfoliatum
Cercis canadensis		Polypogon maritimus
Chrysanthemum coronarium		Polypogon monspeliensis
Cichorium intybus		Populus alba
Cirsium arvense		Populus grandidentata
Cirsium vulgare		Populus tremuloides
Clidemia hirta		Populus sp.
Coincya monensis		Potentilla recta
Colubrina asiatica		Prosopis glandulosa
Complaya trilobata		Prunus pensylvanica
Convolvulus arvensis		Prunus serotina
Coronilla varia		Psidium cattleianum
Cornus amomum		Pueraria montana
Cornus drummondii		Quercus sp.
Cornus racemosa		Rhamnus cathartica
Cornus sericea subsp. sericea		Rhus copallinum
Cortaderia jubata		Rhus glabra
Corylus americana		Rhynchelytrum repens
Corynocarpus laevigatus		Robinia pseudoacacia
Crupina vulgaris		Rosa bracteata
Cynara cardunculus		Rosa multiflora
Cynodon dactylon		Rosa sp.
Cynosurus echinatus		Rottboellia altissima
Cynanchum louiseae		Rubus allegheniensis
Cynoglossum officinale		Rubus argutus
Cynanchum rossicum		Rubus discolor
Cytisus scoparius		Rubus idaeus
Dactylis glomerata		Rubus occidentalis
Daucus carota		Rubus phoenicolasius
Dianthus armeria		Rubus rosifolius
Dioscorea bulbifera		Rubus sp.
Dipsacus fullonum		Salix humilis
Ehrharta calycina		Salsola kali
Eichhornia crassipes		Salvinia sp.
Elaeagnus angustifolia		Sapium sebiferum
Elaeagnus umbellata		Saponaria officinalis
Elytrigia intermedia		Sassafras albidum
Elytrigia repens var. repens		Schinus molle
Epilobium hirsutum		Schinus terebinthifolius
Eragrostis lehmanniana		Secale cereale
Eucalyptus globulus		Senna pendula var. glabrata
Eucalyptus saligna		Sesbania emerus
Euphorbia cyparissias		Sesbania punicea
Euphorbia esula		Sesbania vesicaria
Festuca arundinacea		Setaria glauca
Festuca pratensis		Setaria palmifolia
Festuca spp.		Silybum marianum
Ficus carica		Sisymbrium altissimum
Ficus microcarpa		Smilax rotundifolia
Foeniculum vulgare		Solanum viarum
Frangula alnus		Solidago canadensis
Fraxinus pennsylvanica		Solidago rugosa
Fraxinus uhdei		Sonchus arvensis
Gleditsia triacanthos		Sorghum halepense
Grevillea robusta		Spartina alterniflora
Gypsophila paniculata		Spartina patens
Hamamelis sp.		Stellaria media
Hedera helix		Stenotaphrum secundatum
Hedychium coronarium		Syzgium jambos
Hedychium gardnerianum		Taeniatherum caput-medusae
Hemizonia pungens		Tamarix chinensis
Hesperis matronalis		Tamarix ramosissima
Holcus lanatus		Tamarix sp.
Hordeum spp.		Tanacetum vulgare
Hydrilla verticillata		Tibouchina herbacea
Hydrocharis morsus-ranae		Torilis arvensis
Hyoscyamus niger		Trapa natans
Hypericum perforatum		Typha angustifolia
Ilex spp.		Typha domingensis
Imperata cylindrica		Typha x glauca
Iris pseudacorus		Ulex europeaus
Juniperus ashei		Ulmus americana
Juniperus occidentalis		Ulmus pumila
Juniperus virginiana		Vaccinium sp.
Kochia scoparia		Vallisneria americana
Lactuca serriola		Verbascum thapsus
Lepidium latifolium		Vinca major
Lespedeza cuneata		Vinca minor
Leucanthemum maximum		Washingtonia filifera
Leucanthemum vulgare		Wisteria sinensis
Ligustrum sinense
Ligustrum vulgare
Linaria dalmatica
Linaria vulgaris
Linaria sp.