cerastium arvense, chenopodium album, cirsium arvense, crepis biennis, equisetum arvense, erigeron canadensis, fraxinus excelsior, hieracium racemosum, lolium giganteum, medicago lupulina, mentha arvensis, poa annua, poa nemoralis, polygonum aviculare, populus nigra, salix purpurea, viburnum lantana, vicia cassubica