symphyotrichum ciliatum, echinochloa crus-galli, agrostis stolonifera, amaranthus albus, amaranthus blitoides, ambrosia artemisiifolia, artemisia annua, chenopodium album, cichorium intybus, cirsium arvense, daucus carota, dysphania botrys, elymus repens, eragrostis minor, erigeron canadensis, lactuca serriola, lepidium ruderale, lepidium virginicum, lolium perenne, lotus tenuis, medicago lupulina, persicaria lapathifolia, persicaria maculosa, plantago major, poa annua, polygonum aviculare, puccinellia distans, setaria pumila, trifolium fragiferum, tripleurospermum inodorum