chenopodium album, amaranthus retroflexus, atriplex patula, bellis perennis, chenopodium ficifolium, cirsium arvense, echinochloa crus-galli, elymus repens, galinsoga parviflora, persicaria lapathifolia, poa palustris, ranunculus repens, tripleurospermum inodorum, plantago major