cirsium arvense, amaranthus retroflexus, chenopodium album, convolvulus arvensis, amaranthus powellii, chenopodiastrum hybridum, equisetum arvense, galinsoga parviflora, lysimachia arvensis, mercurialis annua, persicaria lapathifolia, persicaria maculosa, thlaspi arvense, veronica polita, reseda lutea, tripleurospermum inodorum