poa annua, amaranthus deflexus, bellis perennis, chenopodium album, digitaria sanguinalis, eleusine indica, erigeron sumatrensis, euphorbia maculata, euphorbia prostrata, lepidium graminifolium, medicago polymorpha, oxalis corniculata, plantago major, polycarpon tetraphyllum, portulaca oleracea, sonchus asper, symphyotrichum squamatum