chenopodium album, erigeron canadensis, plantago major, sonchus asper, achillea millefolium, amaranthus retroflexus, arctium lappa, capsella bursa-pastoris, cichorium intybus, galinsoga parviflora, helianthus tuberosus, lolium pratense, medicago lupulina, polygonum aviculare, rorippa palustris, sisymbrium officinale, avena sativa