gb, cambridgeshire cc, cirsium arvense, convolvulus arvensis, galium aparine, urtica dioica, veronica persica, heracleum sphondylium, capsella bursa-pastoris, chenopodium album, geranium dissectum, triticum aestivum, stellaria media, ranunculus repens, senecio vulgaris, polygonum aviculare, rumex crispus, sonchus asper, elymus repens, lolium perenne, papaver rhoeas, plantago major, lamium purpureum, hordeum vulgare, anthriscus sylvestris, potentilla reptans, dactylis glomerata, lysimachia arvensis, vicia faba, brassica napus, sinapis arvensis, poa trivialis, euphorbia helioscopia, fallopia convolvulus, trifolium repens, sonchus arvensis, sonchus oleraceus, lamium album, poa annua, tripleurospermum inodorum, plantago lanceolata, arrhenatherum elatius, viola arvensis, glechoma hederacea, rumex obtusifolius, matricaria discoidea, matricaria chamomilla, bromus sterilis, achillea millefolium, alopecurus myosuroides, persicaria maculosa, mercurialis annua