atriplex sagittata, chenopodium album, artemisia vulgaris, capsella bursa-pastoris, chenopodium ficifolium, galinsoga parviflora, lolium perenne, plantago major, poa annua, polygonum aviculare, tripleurospermum inodorum, viola arvensis, matricaria chamomilla, matricaria discoidea, oxalis stricta, descurainia sophia, erigeron canadensis, fallopia convolvulus, poa trivialis, sisymbrium loeselii, stellaria media, tanacetum vulgare, thlaspi arvense, tussilago farfara, urtica dioica, urtica urens