carduus acanthoides, bromus tectorum, bromus squarrosus, centaurea solstitialis, chenopodium album, cirsium arvense, convolvulus arvensis, crepis foetida, daucus carota, lepidium campestre, lolium perenne, polygonum aviculare, sisymbrium loeselii, torilis arvensis, verbascum phlomoides, verbena officinalis, xeranthemum annuum