brassica napus, chenopodium album, erigeron canadensis, tripleurospermum inodorum, achillea millefolium, artemisia vulgaris, avena fatua, capsella bursa-pastoris, cirsium arvense, elymus repens, equisetum arvense, galeopsis tetrahit, galium aparine, lamium purpureum, lolium perenne, matricaria discoidea, oxalis stricta, persicaria lapathifolia, plantago major, poa annua, polygonum aviculare, sisymbrium officinale, sonchus oleraceus, stellaria media