Reed canarygrass (Phalaris arundinacea) in a mixed stand with goldenrods (Solidago spp.) was treated with glyphosate alone or with triclopyr, imazapic or sulfometuron. Adding imazapic did not result in response difference by canarygrass or goldenrod. Adding triclopyr increased goldenrod suppression, but reduced canarygrass suppression. Adding sulfometuron resulted in substantial reduction of both species.