gb, west surrey, capsella bursa-pastoris, chenopodium album, stellaria media, poa annua, convolvulus arvensis, cirsium arvense, polygonum aviculare, veronica persica, viola arvensis, galium aparine, senecio vulgaris, fallopia convolvulus, papaver rhoeas, veronica hederifolia, tripleurospermum inodorum, lamium purpureum, matricaria discoidea, lysimachia arvensis, raphanus raphanistrum, persicaria maculosa, elymus repens, veronica arvensis, vicia sativa, vicia hirsuta, lamium amplexicaule, centaurea cyanus, plantago major, myosotis arvensis, sonchus asper, sonchus oleraceus, euphorbia helioscopia, lolium perenne, arabidopsis thaliana, sinapis arvensis, sisymbrium officinale, geranium pusillum, solanum nigrum, rumex crispus, trifolium repens, persicaria lapathifolia, aphanes arvensis, gnaphalium uliginosum, equisetum arvense, erodium cicutarium, ranunculus repens, atriplex patula, matricaria chamomilla, veronica polita, urtica dioica, rumex obtusifolius