hordeum murinum, bromus sterilis, lolium perenne, amaranthus retroflexus, artemisia vulgaris, capsella bursa-pastoris, carduus acanthoides, chenopodium album, convolvulus arvensis, erigeron canadensis, galinsoga parviflora, geranium pusillum, lactuca serriola, matricaria discoidea, papaver rhoeas, plantago major, poa annua, polygonum aviculare, prunella vulgaris, rumex crispus, scorzoneroides autumnalis, tripleurospermum inodorum