This study investigates the grain growth characteristics of the solid solution (BaxSr(1-x))TiO₃ (barium strontium titanate, BST). The growth behaviour is characterized by growth experi-ments for different Ba/Sr ratios, temperatures and heating times. The data is used to ap-proximate an Arrhenius graph of the grain growth coefficients. For all compositions, bi-modal microstructures occurred, which agrees well with the parenting systems strontium titante (ST) and barium titanate (BT), which are both well-known for their bimodal micro-structure evolution. The difference in growth rate between the large and small grain popu-lation was found to increase with increasing Ba/Sr ratio. Based on these findings, the grain growth mechanism of BST is discussed. It is likely that the large grain population in BST is governed by the motion of disconnections (i.e. grain boundary steps and dislocations). The different faceting behaviour and anisotropy of the grain boundary energy for ST and BT then cause a dependence of the growth rate on the Ba/Sr ratio.