| A-1 Most invasive - widespread |
| Agropyron repens |
Quack grass |
| Ammophila arenaria |
European beachgrass |
| Anthoxanthum odoratum |
Sweet vernalgrass |
| Bromus inermis |
Smooth brome |
| Bromus japonicus |
Japanese brome |
| Bromus tectorum |
Cheatgrass |
| Cardaria draba |
Hoary cress |
| Centaurea diffusa |
Diffuse knapweed |
| Centaurea solstitialis |
Yellow starthistle |
| Cirsium arvense |
Canada thistle |
| Cytisus scoparius |
Scotch or Scot's broom |
| Erodium cicutarium |
Redstem filaree |
| Halogeton glomeratus |
Halogeton |
| Hedera helix |
English ivy |
| Holcus lanatus |
Common velvetgrass |
| Hypericum perforatum |
St. John's wort |
| Hypocharis radicata |
Spotted cat's ear |
| Kochia scoparia |
Kochia |
| Lactuca serriola |
Prickly lettuce |
Leucanthumum vulgare
(Chrysanthemum leucanthemum) |
Ox-eye daisy |
| Linaria genistifolia subsp. dalmatica |
Dalmatian toadflax |
| Lythrum salicaria |
Purple loosestrife |
| Matricaria matricarioides |
Pineapple weed |
| Phalaris arundinacea |
Reed canary grass |
| Poa pratensis |
Kentucky bluegrass |
| Robinia pseudoacacia |
Black locust |
| Rorripa nasturium-aquaticum |
| Rubus discolor |
Himalayan blackberry |
| Rumex acetosella |
Red sorrel |
| Senecio jacobaea |
Tansy ragwort |
| Sisymbrium altissimum |
Tumble mustard |
| Taeniatherum caput-medusae |
Medusahead |
| Tragopogan pratensis |
Meadow salsify |
| Verbascum thapsus |
Mullein
|
