plantago major, bromus hordeaceus, polygonum aviculare, capsella bursa-pastoris, erigeron canadensis, hordeum murinum, lolium perenne, poa annua, sisymbrium officinale, agrostis capillaris, chenopodium album, dactylis glomerata, galinsoga parviflora, lepidium ruderale, matricaria discoidea, medicago lupulina, persicaria maculosa, ranunculus repens, rumex obtusifolius, senecio vulgaris, trifolium repens