text: amaranthus blitum, echinochloa crus-galli, atriplex prostrata, convolvulus arvensis, erigeron canadensis, galinsoga parviflora, chenopodium album, digitaria sanguinalis, epilobium tetragonum, oxybasis rubra, persicaria amphibia, persicaria lapathifolia, portulaca oleracea, setaria pumila, xanthium strumarium