chenopodium album, chenopodium ficifolium, artemisia vulgaris, atriplex patula, capsella bursa-pastoris, cirsium arvense, echinochloa crus-galli, erigeron canadensis, euphorbia helioscopia, lactuca serriola, medicago lupulina, mercurialis annua, poa annua, polygonum aviculare, sisymbrium loeselii, solanum nigrum, stellaria media, tripleurospermum inodorum, urtica dioica