erigeron canadensis, arenaria serpyllifolia, lactuca serriola, setaria viridis, poa compressa, sedum acre, viola arvensis, atriplex patula, bromus hordeaceus, capsella bursa-pastoris, convolvulus arvensis, elymus repens, galium aparine, geranium pusillum, lepidium ruderale, matricaria chamomilla, matricaria discoidea, ranunculus bulbosus, roemeria argemone, silene vulgaris, veronica hederifolia, tragopogon pratensis, vicia hirsuta