artemisia vulgaris, elymus repens, erigeron canadensis, lactuca serriola, polygonum aviculare, sisymbrium altissimum, achillea millefolium, capsella bursa-pastoris, chenopodium album, cirsium arvense, equisetum arvense, hypochaeris radicata, plantago lanceolata, poa annua, senecio inaequidens, senecio viscosus, sisymbrium officinale, sonchus oleraceus, trifolium repens, bromus hordeaceus, festuca rubra, holcus mollis, ranunculus sceleratus, rumex acetosa