atriplex sagittata, chenopodium album, chenopodium ficifolium, galinsoga parviflora, lolium perenne, oxalis stricta, polygonum aviculare, tripleurospermum inodorum, urtica urens, viola arvensis, capsella bursa-pastoris, plantago major, poa annua, urtica dioica, achillea millefolium, agrostis stolonifera, artemisia vulgaris, descurainia sophia, erigeron canadensis, fallopia convolvulus, matricaria chamomilla, medicago lupulina, pimpinella saxifraga, sinapis arvensis, sisymbrium loeselii, thlaspi arvense, trisetum flavescens