echium rosulatum, verbena officinalis, capsella bursa-pastoris, hordeum murinum, lolium perenne, mentha suaveolens, persicaria maculosa, plantago lanceolata, plantago major, sisymbrium officinale, sonchus oleraceus, trifolium pratense, erigeron canadensis, amaranthus hybridus, chelidonium majus, cyperus longus, digitaria sanguinalis, echinochloa crus-galli, galinsoga parviflora, geranium molle, rumex obtusifolius, urtica dioica