erigeron canadensis, chenopodium album, amaranthus retroflexus, arenaria serpyllifolia, artemisia vulgaris, cirsium arvense, convolvulus arvensis, elymus repens, lactuca serriola, medicago lupulina, mentha arvensis, oxalis stricta, papaver rhoeas, setaria pumila, solanum nigrum, tussilago farfara, erysimum cheiranthoides, galinsoga parviflora, plantago major, stachys annua