be, arr. leuven, urtica dioica, heracleum sphondylium, ranunculus repens, arrhenatherum elatius, cirsium arvense, symphytum officinale, holcus lanatus, geranium pyrenaicum, glechoma hederacea, galium aparine, poa trivialis, lolium perenne, silene coronaria, melilotus albus, calystegia sepium, lathyrus latifolius, potentilla indica, tanacetum vulgare, phragmites australis, populus canadensis, galinsoga quadriradiata, sambucus nigra, claytonia perfoliata, veronica persica, pilosella aurantiaca, phalaris arundinacea, quercus robur, alnus glutinosa, oxalis corniculata, lepidium didymum, eupatorium cannabinum, epilobium hirsutum, dactylis glomerata, prunus serotina, galeopsis tetrahit, lythrum salicaria, phytolacca acinosa, rumex obtusifolius, plantago lanceolata, erigeron sumatrensis, elymus repens, alopecurus pratensis, trifolium repens, symphoricarpos albus, quercus rubra, lamium album, erigeron canadensis, filipendula ulmaria, equisetum arvense, agrostis stolonifera