The cleanup of oil spills in coastal marshes remains a problematic issue because wetlands can be extremely sensitive to the disturbances associated with cleanup actives. As a result, there has been interest in developing alternative, less intrusive, oil spill cleanup/bioremediation techniques. The research reported herein assessed the feasibility of identifying superior oil-tolerant genotypes of Spartina patens and Spartina alterniflora that may be utilized in the restoration and bioremediation of oil-impacted marshes, as well as in the creation of marshes in areas with a high amount of oil activity and, hence, and high incidence of an oil spill occurring.