Stokes aster (Stokesia laevis (Hill) Greene) is a potential industrial oilseed crop. Achenes of the plant produce vernolic acid, a source of epoxy oil useful in paints and plastics. Because Stokes aster does not produce an economical yield the first year of growth, a viable production system for the first year may be to intercrop it with a summer annual such as soybean (Glycine max (L.) Merr.). Weed control is a major management problem for the slow-growing seedlings so that Stokes aster's tolerance to eleven soybean herbicides was determined. Postemergence herbicide and preplant/pre-emergence herbicide greenhouse experiments were conducted. Stokes aster showed excellent tolerance to fluazifop-P-butyl, vernolate, and trifluralin; moderate tolerance to imazaquin, acifluorfen, fomesafen, and metribuzin; and sensitivity to chlorimuron, bentazon, metolachlor, and norflurazon.