Excavations during the summer of 2007 at Cade 9 (47Ve625) in Vernon County, Wisconsin, revealed several features with diagnostic pottery from the Great Oasis culture. The Great Oasis culture is known to have extended from northwest Iowa to Nebraska, and has not been previously found in Wisconsin. A sample of the floral remains from these features was analyzed to determine the seasonality of the occupation, and wood charcoal was radiocarbon dated to an approximate time span of circa A.D 1040 +/- 30 (uncalibrated). The results suggest warm weather agriculture with no winter components.