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4.5.209    PRIORITY 2B

(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).

History: 80-7-802, MCA; IMP, 7-22-2101, MCA; NEW, 2010 MAR p. 217, Eff. 1/29/10; AMD, 2013 MAR p. 2419, Eff. 12/27/13.

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