viola arvensis, brassica napus, tripleurospermum inodorum, aphanes arvensis, hordeum vulgare, papaver rhoeas, achillea millefolium, capsella bursa-pastoris, cirsium arvense, galium aparine, lamium purpureum, matricaria discoidea, mercurialis annua, myosotis arvensis, polygonum aviculare, stellaria media