chenopodium album, amaranthus albus, bassia scoparia, erigeron canadensis, amaranthus retroflexus, capsella bursa-pastoris, cynodon dactylon, dysphania botrys, euphorbia helioscopia, galinsoga parviflora, hordeum murinum, lolium perenne, melilotus officinalis, oxybasis glauca, plantago major, polygonum aviculare, solanum nigrum