urtica dioica, elymus repens, lactuca serriola, abutilon theophrasti, amaranthus retroflexus, chenopodium album, cirsium arvense, convolvulus arvensis, sorghum halepense, amorpha fruticosa, carduus acanthoides, conium maculatum, dipsacus fullonum, onopordum acanthium, poa trivialis, rumex obtusifolius, solanum nigrum, tripleurospermum inodorum