chenopodium album, erigeron canadensis, onopordum acanthium, achillea millefolium, artemisia vulgaris, elymus repens, hordeum murinum, lolium perenne, medicago lupulina, poa pratensis, tripleurospermum inodorum, agrostis stolonifera, anthriscus sylvestris, arctium lappa, atriplex patula, ballota nigra, berteroa incana, bromus tectorum, capsella bursa-pastoris, cirsium arvense, convolvulus arvensis, daucus carota, echium vulgare, euphorbia peplus, hyoscyamus niger, lactuca serriola, lepidium draba, lepidium ruderale, lotus corniculatus, melilotus officinalis, papaver rhoeas, picris hieracioides, plantago major, poa annua, poa compressa, rumex obtusifolius, setaria pumila, setaria verticillata, sisymbrium officinale, solidago canadensis, sonchus oleraceus, trifolium repens, urtica dioica