lactuca serriola, erigeron canadensis, achillea millefolium, amaranthus retroflexus, artemisia vulgaris, bromus sterilis, chenopodium album, cirsium arvense, galinsoga parviflora, hyoscyamus niger, papaver somniferum, senecio viscosus, sisymbrium altissimum, sisymbrium officinale, stellaria media, thlaspi arvense, tripleurospermum inodorum