text: poa annua, stellaria media, mercurialis annua, persicaria amphibia, senecio vulgaris, veronica opaca, veronica peregrina, capsella bursa-pastoris, chenopodium album, cirsium arvense, euphorbia peplus, fallopia convolvulus, lipandra polysperma, matricaria chamomilla, polygonum aviculare, solanum nigrum, sonchus asper, sonchus oleraceus, urtica urens, veronica agrestis, aethusa cynapium