poa annua, erigeron canadensis, plantago major, agrostis capillaris, artemisia vulgaris, bromus hordeaceus, capsella bursa-pastoris, holcus lanatus, hordeum murinum, hypochaeris radicata, lolium perenne, matricaria discoidea, oxalis stricta, plantago lanceolata, polygonum aviculare, ranunculus repens, sagina procumbens, senecio vulgaris, sisymbrium officinale, sonchus oleraceus