(1) These weeds are abundant in Montana and widespread in many counties. Management criteria will require eradication or containment where less abundant. Management shall be prioritized by local weed districts:

(a) Canada thistle (Cirsium arvense);

(b) Field bindweed (Convolvulus arvensis);

(c) Leafy spurge (Euphorbia esula);

(d) Whitetop (Cardaria drabaˌ Lepidium draba);

(e) Russian knapweed (Acroptilon repensˌ Rhaponticum repens);

(f) Spotted knapweed (Centaurea stoebe, C. maculosa);

(g) Diffuse knapweed (Centaurea diffusa);

(h) Dalmatian toadflax (Linaria dalmatica);

(i) St. Johnswort (Hypericum perforatum);

(j) Sulfur cinquefoil (Potentilla recta);

(k) Common tansy (Tanacetum vulgare);

(l) Oxeye daisy (Leucanthemum vulgare);

(m) Houndstongue (Cynoglossum officinale);

(n) Yellow toadflax (Linaria vulgaris);

(o) Saltcedar (Tamarix spp.);

(p) Flowering rush (Butomus umbellatus);

(q) Eurasian watermilfoil (Myriophyllum spicatum); and

(r) Curlyleaf pondweed (Potamogeton crispus).