triticum aestivum, cirsium arvense, elymus repens, galinsoga parviflora, thlaspi arvense, chenopodium album, galinsoga quadriradiata, trifolium repens, achillea millefolium, capsella bursa-pastoris, convolvulus arvensis, euphorbia helioscopia, fumaria officinalis, galium aparine, lamium purpureum, persicaria lapathifolia, poa trivialis, tussilago farfara, veronica persica