lactuca serriola, amaranthus retroflexus, artemisia vulgaris, atriplex sagittata, bromus sterilis, capsella bursa-pastoris, chenopodium album, cirsium arvense, erigeron canadensis, fallopia convolvulus, hordeum murinum, senecio viscosus, solidago gigantea, sonchus arvensis, sonchus oleraceus, tripleurospermum inodorum