euphorbia peplus, galinsoga parviflora, amaranthus retroflexus, artemisia annua, atriplex oblongifolia, atriplex patula, capsella bursa-pastoris, chenopodium album, chenopodium opulifolium, digitaria sanguinalis, erigeron canadensis, euphorbia helioscopia, lolium perenne, malva sylvestris, polygonum aviculare, senecio vernalis, senecio vulgaris, sonchus arvensis, stellaria media, veronica opaca, veronica polita