convolvulus arvensis, polygonum aviculare, amaranthus retroflexus, persicaria maculosa, capsella rubella, cynodon dactylon, elymus repens, erigeron canadensis, fumaria officinalis, heliotropium europaeum, papaver rhoeas, pteridium aquilinum, senecio vulgaris, setaria viridis, silene vulgaris, urtica urens