Priority 2B

Priority 2B weeds are abundant in Montana and widespread in many counties. Management criteria will require containment and suppression where abundant and widespread, and eradication or containment, prevention and education where less abundant. Management shall be prioritized by local weed districts.

Noxious Weed Species Common
Scientific Name
Spotted Knapweed Centaurea stoebe
Houndstongue Cynoglossum officinale
Canada Thistle Cirsium arvense
Oxeye Daisy Leucanthemum vulgare
Whitetop Cardaria draba, Lepidium draba
Hoary Alyssum Berteroa incana
Diffuse Knapweed Centaurea diffusa
Field Bindweed Convolvulus arvensis
Leafy Spurge Euphorbia esula
Common Tansy Tanacetum vulgare
Dalmatian Toadflax Linaria dalmatica
Yellow Toadflax Linaria vulgaris
Sulfur Cinquefoil Potentilla recta
Russian Knapweed Acroptilon repens, Rhaponticum repens
Salt Cedar Tamarix ramosissima, T. chinensis
St. Johnswort Hypericum perforatum
Common Buckthorn Rhamnus cathartica L
Curlyleaf Pondweed Potamogeton crispup