xanthium strumarium, capsella bursa-pastoris, chenopodiastrum hybridum, descurainia sophia, erigeron canadensis, malva neglecta, poa annua, apera spica-venti, arctium tomentosum, atriplex patula, ballota nigra, erysimum cheiranthoides, galinsoga quadriradiata, lolium perenne, persicaria maculosa, plantago major, polygonum aviculare, sisymbrium officinale, sonchus oleraceus, stellaria media, tripleurospermum inodorum, urtica dioica, urtica urens