tussilago farfara, artemisia vulgaris, chenopodium album, agrostis stolonifera, cirsium arvense, lactuca serriola, persicaria maculosa, trifolium repens, atriplex calotheca, atriplex patula, chaenorhinum minus, impatiens parviflora, plantago lanceolata, poa pratensis, senecio viscosus, sisymbrium loeselii, solidago canadensis, solidago gigantea, trifolium pratense, tripleurospermum inodorum