erigeron canadensis, polygonum aviculare, amaranthus albus, artemisia vulgaris, achillea millefolium, capsella bursa-pastoris, lepidium ruderale, lolium perenne, poa annua, poa compressa, rumex obtusifolius, trifolium repens, chenopodium album, cirsium arvense, matricaria chamomilla, plantago major