triticum aestivum, centaurea cyanus, cirsium arvense, buglossoides arvensis, chenopodium album, convolvulus arvensis, delphinium consolida, galeopsis ladanum, knautia arvensis, papaver rhoeas, persicaria amphibia, stellaria media, thlaspi arvense, veronica hederifolia, veronica triphyllos, descurainia sophia, lamium amplexicaule