cyclachaena xanthiifolia, artemisia vulgaris, lolium perenne, chenopodium album, convolvulus arvensis, elymus repens, erigeron canadensis, fallopia convolvulus, hordeum murinum, poa palustris, poa pratensis, achillea millefolium, amaranthus albus, amaranthus retroflexus, arctium lappa, atriplex tatarica, ballota nigra, bromus tectorum, calamagrostis epigejos, capsella bursa-pastoris, cirsium arvense, galinsoga parviflora, lactuca serriola, lepidium draba, solanum nigrum, solidago canadensis, tripleurospermum inodorum