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