euphorbia peplus, galinsoga parviflora, arctium minus, artemisia annua, chenopodium opulifolium, digitaria sanguinalis, erigeron canadensis, fragaria moschata, lamium amplexicaule, lolium perenne, malva pusilla, plantago major, poa annua, polygonum aviculare, senecio vernalis, senecio vulgaris, sisymbrium officinale, sonchus arvensis, veronica polita