chenopodium album, erigeron canadensis, tussilago farfara, artemisia vulgaris, cyclachaena xanthiifolia, sisymbrium officinale, arctium tomentosum, atriplex patula, atriplex sagittata, ballota nigra, capsella bursa-pastoris, carduus crispus, daucus carota, descurainia sophia, echinochloa crus-galli, elymus repens, fallopia convolvulus, galinsoga quadriradiata, papaver rhoeas, plantago major, polygonum aviculare, ranunculus repens, setaria pumila, sisymbrium loeselii, solanum nigrum, stellaria media, trifolium repens, urtica dioica