euphorbia maculata, polygonum aviculare, eragrostis minor, erigeron canadensis, amaranthus albus, amaranthus crispus, amaranthus deflexus, arenaria serpyllifolia, atriplex tatarica, capsella bursa-pastoris, digitaria sanguinalis, juncus compressus, portulaca oleracea, rorippa sylvestris, spergularia rubra, tanacetum vulgare, taraxacum minimum