tussilago farfara, rorippa sylvestris, sonchus arvensis, elymus repens, oxybasis glauca, poa annua, stellaria media, capsella bursa-pastoris, chenopodium album, chenopodium ficifolium, matricaria discoidea, persicaria hydropiper, persicaria lapathifolia, polygonum aviculare, senecio vulgaris, tripleurospermum maritimum, cirsium arvense, erigeron canadensis, phalaris arundinacea, ranunculus sceleratus, thlaspi arvense