lactuca sativa, helminthotheca echioides, poa annua, sonchus oleraceus, chenopodiastrum murale, lepidium coronopus, lepidium didymum, lolium rigidum, malva parviflora, persicaria lapathifolia, plantago major, polygonum aviculare, polypogon monspeliensis, rumex crispus, solanum nigrum, sonchus asper, symphyotrichum squamatum, euphorbia hirsuta, lepidium graminifolium, nasturtium officinale, senecio vulgaris, sisymbrium irio, urtica urens, verbena officinalis