lolium perenne, plantago major, erigeron canadensis, hordeum murinum, achillea millefolium, ballota nigra, poa annua, sisymbrium officinale, agrostis capillaris, arctium lappa, artemisia vulgaris, bromus hordeaceus, capsella bursa-pastoris, convolvulus arvensis, geranium pusillum, lactuca serriola, lepidium ruderale, polygonum aviculare, silene latifolia, trifolium repens