matricaria discoidea, plantago major, poa annua, lepidium ruderale, poa pratensis, capsella bursa-pastoris, chenopodium album, lolium perenne, poa compressa, achillea millefolium, agrostis stolonifera, amaranthus retroflexus, artemisia vulgaris, atriplex sagittata, ballota nigra, bromus hordeaceus, bromus sterilis, carduus acanthoides, cirsium arvense, descurainia sophia, echium vulgare, elymus repens, erigeron canadensis, galinsoga parviflora, lactuca serriola, lolium multiflorum, medicago lupulina, phleum pratense, plantago lanceolata, scorzoneroides autumnalis, sonchus oleraceus, thlaspi arvense, trifolium pratense, tripleurospermum inodorum, urtica dioica