chenopodium album, elymus repens, galium aparine, ballota nigra, bromus hordeaceus, erigeron canadensis, galinsoga parviflora, geranium pusillum, phalaris canariensis, poa annua, sisymbrium officinale, amaranthus retroflexus, capsella bursa-pastoris, lapsana communis, malva neglecta, panicum miliaceum, papaver rhoeas, rumex obtusifolius, urtica urens