Several differences in patterns of plant use between the Wall and Fredricks site occupations are apparent. Acorn and walnut were used more frequently at Wall, whereas hickory dominates at Fredricks. An earlier pattern of more equitable use of all three nut types gave way to one of concentration on hickory with retention of acorn and walnut as relatively minor resources. Corn remained the chief staple crop, and may have become even more important in the Historic period. Native grasses available in spring and summer were seasonally important at least to the Mitchum site population. The Wall site population either grew or acquired cultigen sumpweed, but there is no evidence of the use of indigenous grain crops at Fredricks. The peach was used and probably cultivated by the time of the Mitchum site occupation, but had not yet become available to the Wall site population. There may have been a trend at the Hillsborough locality toward use of more plant resources with intensive use of a small number of these, but this interpretation is still tentative.