Chemical Control of Noxious Weeds,
Recommendations By Weed:
category 1:
(a) Canada thistle (Cirsium arvense)
(b) field bindweed (Convolvulus arvensis)
(c) whitetop or hoary cress (Cardaria draba)
(d) leafy spurge (Euphorbia esula) [ version 2 ]
(e) Russian knapweed (Centaurea repens) [ version 2 ] [version 3]
(f) spotted knapweed (Centaurea maculosa)
(g) diffuse knapweed (Centaurea diffusa)
(h) Dalmatian toadflax (Linaria dalmatica)
(i) St. Johnswort (Hypericum perforatum)
(j) sulfur (erect) cinquefoil (Potentilla recta)
(k) common tansy (Tanacetum vulgare L.)
(l) ox-eye daisy (Chrysanthemum leucanthemum L.)
(m) houndstongue (Cynoglossum officinale L.)
category 2:
(a) dyers woad (Isatis tinctoria)
(b) purple loosestrife or lythrum (Lythrum salicaria, L. virgatum, and any hybrid crosses thereof)
(c) tansy ragwort (Senecio jacobea L.)
(d) meadow hawkweed complex (Hieracium pratense, H. floribundum, H. piloselloides)
(e) orange hawkweed (Hieracium aurantiacum L.)
(f) tall buttercup (Ranunculus acris L.)
(g) tamarisk [saltceder] (Tamarix spp.)
category 3:
(a) yellow starthistle (Centaurea solstitialis)
(b) common crupina (Crupina vulgaris)
(c) rush skeletonweed (Chondrilla juncea)
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