corispermum intermedium, erigeron canadensis, sisymbrium altissimum, artemisia vulgaris, chenopodium album, descurainia sophia, elymus repens, medicago lupulina, poa annua, rumex acetosella, senecio viscosus, spergula arvensis, carex arenaria, corynephorus canescens, scleranthus annuus, trifolium arvense, trifolium campestre, viola arvensis