brassica napus, lamium purpureum, thlaspi arvense, viola arvensis, centaurea cyanus, elymus repens, myosotis arvensis, tripleurospermum inodorum, veronica hederifolia, anthemis arvensis, capsella bursa-pastoris, euphorbia helioscopia, galium aparine, papaver rhoeas, rumex crispus, stellaria media, veronica persica