Existing bahiagrass (Paspalum notatum Flügge) cultivars have minimal cool-season production likely due in part to a daylength response. A new genotype is more productive during shorter days and possesses greater cold tolerance, but its persistence under defoliation is unknown. The objective was to compare changes in percent cover, mass of storage organs, and storage organ total non-structural carbohydrate and nitrogen content of a photoperiod insensitive, cold adapted (PICA) diploid genotype (Selection 4) to those of diploids ‘Pensacola’ and ‘Tifton 9’ and tetraploids ‘Argentine’ and ‘Tifton 7’. All were clipped every 7 or 21 d to a 4- or 8-cm stubble during May-October 2005 and 2006. Cut to an 8-cm stubble during 2 yr, PICA cover (-17 percentage units) decreased more than all genotypes but Tifton 7, but at the 4-cm stubble only Argentine performed better than PICA. Cut every 7 d, October root/rhizome mass of PICA was less than Argentine and Pensacola but not different than upright types Tifton 7 and Tifton 9. There were no differences in October root/rhizome mass among genotypes when cut every 21 d. Under close defoliation (4 cm), PICA root/rhizome mass in October was less than Argentine but similar to all other genotypes. Shoot mass of PICA in October was lower than most genotypes for both years when cut every 7 d. During 2 yr of defoliation, responses associated with sward persistence were generally poorer for PICA than for Argentine, but not consistently poorer than other bahiagrass genotypes.