amaranthus powellii, amaranthus retroflexus, capsella bursa-pastoris, aristolochia clematitis, chenopodium album, cirsium arvense, crepis foetida, echinochloa crus-galli, elymus repens, erigeron canadensis, galinsoga parviflora, lactuca serriola, lepidium draba, portulaca oleracea, setaria viridis, solanum nigrum, sonchus arvensis, stellaria media