galinsoga parviflora, galinsoga quadriradiata, poa annua, stellaria media, erysimum cheiranthoides, rumex acetosella, senecio vulgaris, chenopodium album, elymus repens, erigeron canadensis, euphorbia peplus, fumaria officinalis, lamium purpureum, setaria viridis, urtica urens, aethusa cynapium, galium aparine, senecio vernalis, sonchus oleraceus, spergula arvensis