text: euphorbia peplus, galinsoga parviflora, amaranthus retroflexus, ballota nigra, capsella bursa-pastoris, cichorium intybus, lipandra polysperma, persicaria maculosa, poa annua, polygonum aviculare, rumex obtusifolius, sisymbrium officinale, solanum nigrum, sonchus arvensis, stellaria media, veronica opaca