asclepias syriaca, cynodon dactylon, polygonum aviculare, cichorium intybus, erigeron canadensis, lepidium ruderale, lolium perenne, plantago major, althaea officinalis, amaranthus blitum, amaranthus retroflexus, arctium lappa, arenaria serpyllifolia, eleusine indica, lepidium draba, sorghum halepense, trifolium fragiferum