xanthium spinosum, amaranthus retroflexus, onopordum acanthium, amaranthus powellii, atriplex oblongifolia, descurainia sophia, erigeron canadensis, lotus corniculatus, malva neglecta, plantago major, polygonum aviculare, portulaca oleracea, tripleurospermum inodorum, urtica dioica, verbascum phlomoides, verbena officinalis