Vegetative growth and bearing potential of plum cvs Stanley and Požegača on the two stock/interstock combinations in relation to generative myrobalan stock were investigated. In combination 1 rootstock was cv Sitnica, and as interstock vegetative rootstock Brompton. In combination 2 rootstock was cv Banjalučka bjelica and interstock cv Miškovača. In both combinations interstock length was 15 cm. At the time of evaluation the trees were in bearing and the signs of incompatibility were not observed at the graft unions. Both grafted cultivare had a substantially reduced growth habit with both stock / interstock combinations in relation to Myrobalan, nevertheless the reaction of cultivars was disparate. Požegača was the least vigorous with combination 1, and cv Stanley with combination 2. The highest bearing potential in both cultivars was recorded with combination 1. The highest occurrence of generative bud abortion was on myrobalan, and the lowest one in combination 1.