text: stellaria media, amaranthus retroflexus, digitaria sanguinalis, chenopodium album, galinsoga parviflora, lamium purpureum, lipandra polysperma, poa annua, portulaca oleracea, sonchus asper, chenopodiastrum hybridum, echinochloa crus-galli, malva neglecta, persicaria maculosa, senecio vulgaris, sonchus oleraceus, urtica dioica