Introducing self-reseeding summer legumes into cool-season and warm-season pastures can be advantageous in improving forage distribution, increasing animal performance, and decreasing reliability on nitrogen fertilizer.  Examples for such legumes are smooth-seeded wild bean (Strophostyles leiosperma) and trailing wild bean (S. helvula).  These native species have tremendous potential to provide high quality forage during summer when grasses are low in quality.  However, limited information is available on their agronomic management including seeding rates.  Five seeding rates (4, 8, 10, 12, and 16 lb/ac) were included in a field study in southern Oklahoma to determine the optimal seeding rate for smooth-seeded wild bean (PI 215298) and trailing wild bean (PI 215295).  The design of the experiment was a completely randomized block with four replications.  The experiment was planted in April, and harvested four times in June, July, August, and October 2006.  Cumulative forage yields in trailing wild bean were the greatest (2163, 2874, 3589, and 3669 lb/ac) at 16 lb/ac seeding rate and the lowest (843, 2067, 2657, and 2766 lb/ac) at 4 lb/ac seeding rate at all harvesting dates, respectively.  Although numerically highest forage yield was obtained from the highest seeding rate, there were no differences (P > 0.05) among forage yields at 10, 12 and 16 lb/ac seeding rates.  Similar trends were also observed in smooth-seeded wild bean however, no differences were noticed (yield ranged 943-1224 lb/ac) at all seeding rates except 4 lb/ac (yield 669 lb/ac) at the final harvest.  The cumulative yields were lower in smooth-seeded wild bean than trailing wild bean, indicating the necessity of selecting appropriate lines of smooth-seeded wild bean.  The results thus indicate that trailing wild bean can be seeded at 10 lb/ac while smooth-seeded wild bean can be seeded as low as 8 lb/ac to obtain beneficial forage yields.