ambrosia artemisiifolia, chenopodium album, erigeron canadensis, amaranthus retroflexus, capsella bursa-pastoris, echinochloa crus-galli, galinsoga parviflora, polygonum aviculare, urtica dioica, arenaria serpyllifolia, daucus carota, elymus repens, erigeron annuus, geranium molle, lactuca serriola, panicum capillare, plantago major, poa trivialis, silene latifolia, sonchus asper