sonchus arvensis, aethusa cynapium, apera spica-venti, capsella bursa-pastoris, centaurea cyanus, equisetum arvense, vicia hirsuta, vicia sativa, cirsium arvense, convolvulus arvensis, delphinium consolida, euphorbia exigua, galium aparine, gnaphalium uliginosum, lysimachia arvensis, matricaria chamomilla, medicago lupulina, papaver rhoeas, poa annua, polypogon viridis, scleranthus annuus, sonchus asper, tripleurospermum inodorum, tussilago farfara, veronica arvensis, vicia villosa, veronica hederifolia