erigeron canadensis, poa annua, capsella bursa-pastoris, crepis capillaris, cymbalaria muralis, dactylis glomerata, daucus carota, epilobium tetragonum, lactuca serriola, lepidium virginicum, lolium perenne, plantago lanceolata, plantago major, polygonum aviculare, salix atrocinerea, sonchus oleraceus