chenopodium album, amaranthus retroflexus, artemisia annua, atriplex tatarica, erigeron canadensis, polygonum aviculare, tripleurospermum inodorum, xanthium orientale, amaranthus blitoides, arctium lappa, cuscuta campestris, eragrostis minor, rumex pulcher, solanum nigrum, solidago canadensis, sonchus arvensis, urtica urens