lepidium densiflorum, echium vulgare, medicago lupulina, achillea millefolium, geranium pusillum, tripleurospermum inodorum, amaranthus retroflexus, artemisia vulgaris, bromus hordeaceus, capsella bursa-pastoris, chenopodium album, daucus carota, descurainia sophia, elymus repens, erigeron canadensis, poa annua, poa compressa, polygonum aviculare, sisymbrium loeselii, trifolium repens, carduus acanthoides, dactylis glomerata, erysimum cheiranthoides, myosotis arvensis, plantago major, solanum nigrum, solidago canadensis, symphyotrichum salignum, tanacetum vulgare, tussilago farfara