elymus repens, lactuca serriola, trifolium repens, arenaria serpyllifolia, arrhenatherum elatius, carduus acanthoides, cirsium arvense, erigeron canadensis, centaurea cyanus, cirsium vulgare, convolvulus arvensis, erigeron annuus, galium aparine, lapsana communis, melilotus officinalis, phleum pratense, tripleurospermum inodorum, viola arvensis