be, arr. leuven, arrhenatherum elatius, cirsium arvense, populus canadensis, holcus lanatus, quercus robur, urtica dioica, ranunculus repens, tanacetum vulgare, agrostis capillaris, heracleum sphondylium, poa trivialis, glechoma hederacea, rumex acetosa, alopecurus pratensis, stellaria graminea, achillea millefolium, galeopsis tetrahit, prunus serotina, angelica sylvestris, hypericum perforatum, ranunculus acris, festuca rubra, galium aparine, symphytum officinale, plantago lanceolata, cerastium fontanum, equisetum arvense, dactylis glomerata, phalaris arundinacea, lolium perenne, elymus repens, juncus effusus, filipendula ulmaria, calystegia sepium, centaurea jacea, cerastium holosteoides, rumex obtusifolius, trifolium repens, sambucus nigra, betula pendula, vicia cracca, phragmites australis, carex hirta, lathyrus pratensis, leucanthemum vulgare, trifolium dubium, anthoxanthum odoratum, alnus glutinosa, quercus rubra, trifolium pratense