echium vulgare, anchusa officinalis, agrostis capillaris, cerastium arvense, digitaria ischaemum, elymus repens, erodium cicutarium, fallopia convolvulus, poa pratensis, polygonum aviculare, rumex acetosella, anthoxanthum odoratum, dactylis glomerata, erigeron canadensis, holcus lanatus, oenothera biennis, persicaria lapathifolia, plantago lanceolata, verbascum thapsus