poa annua, malva neglecta, capsella bursa-pastoris, hordeum murinum, polygonum aviculare, anthemis cotula, malva pusilla, medicago lupulina, chenopodium album, erigeron canadensis, lactuca serriola, matricaria discoidea, plantago major, reseda lutea, senecio vulgaris, sonchus oleraceus, chenopodium vulvaria, poa pratensis, trifolium repens, bromus tectorum, lolium perenne