cyclachaena xanthiifolia, artemisia vulgaris, erigeron canadensis, amaranthus retroflexus, arctium lappa, elymus repens, lactuca serriola, plantago major, poa annua, poa pratensis, solanum nigrum, urtica dioica, atriplex sagittata, bromus hordeaceus, capsella bursa-pastoris, carduus acanthoides, chenopodium album, chenopodium ficifolium, cirsium arvense, convolvulus arvensis, fallopia convolvulus, galinsoga parviflora, hordeum murinum, lamium album, lolium perenne, persicaria lapathifolia, sisymbrium loeselii, solidago canadensis, sonchus oleraceus, stellaria media, tripleurospermum inodorum