artemisia vulgaris, tanacetum vulgare, lepidium virginicum, erigeron annuus, linaria vulgaris, ajuga reptans, arenaria serpyllifolia, arrhenatherum elatius, capsella bursa-pastoris, carex hirta, centaurea jacea, cirsium vulgare, erigeron canadensis, holcus lanatus, lactuca serriola, leontodon hispidus, lotus corniculatus, medicago lupulina, plantago lanceolata, plantago major, poa annua, rumex crispus