nl, agglomeratie leiden en bollenstreek, poa annua, stellaria media, ranunculus repens, poa trivialis, lolium perenne, elymus repens, trifolium repens, agrostis stolonifera, cirsium arvense, capsella bursa-pastoris, polygonum aviculare, plantago major, cerastium holosteoides, alopecurus geniculatus, holcus lanatus, rumex crispus, dactylis glomerata, phleum pratense, persicaria amphibia, poa pratensis, bromus hordeaceus, chenopodium album, rumex obtusifolius, persicaria maculosa, argentina anserina, ranunculus acris, urtica dioica, persicaria hydropiper, rumex acetosa, glyceria fluitans, ranunculus sceleratus, phalaris arundinacea, matricaria chamomilla, senecio vulgaris, phragmites australis, matricaria discoidea, bellis perennis, glechoma hederacea, alopecurus pratensis, plantago lanceolata, juncus bufonius, solanum nigrum, trifolium pratense, sonchus asper, achillea millefolium, lolium pratense, glyceria maxima, equisetum arvense, sonchus oleraceus, galium aparine