chenopodium album, amaranthus retroflexus, convolvulus arvensis, elymus repens, malva neglecta, papaver rhoeas, sambucus ebulus, sonchus asper, sonchus oleraceus, allium paniculatum, avena barbata, digitaria sanguinalis, erigeron canadensis, lactuca serriola, malva sylvestris, rumex crispus, setaria verticillata